Keep it simple.
Software house focused on your goals
We offer comprehensive app development services. Holdapp was established in 2012. Since then, our team has built over 60 applications for over 30 clients from multiple industries, such as sports betting, e-commerce, or cryptocurrency.
Our specializations are:
- mobile app development, including native iOS & Android apps and cross-platform apps,
- web app development, including frontend and backend.
We develop mobile products with Swift, Kotlin, Flutter, Java, and Objective-C.
For web apps, we choose React, Node.js, Ruby, and PHP.
How do we work?
Our team follows iterative, Agile methodologies to ensure smooth workflow and give you more control over the development. An important part of our process isquality assurance – QA specialists thoroughly test the applications, so you can rest assured that the product works flawlessly.
At Holdapp, we’re with our clients every step of the way. We run Product Sprint workshops to help them define product strategy, prepare UX/UI projects, and advise clients on technology-related issues. Once the app is ready to be released, we take care of its launch on the app stores.
Whether you’re planning a complex, long-term project or just a simple MVP – we’re here to help you build a well-performing product.
Feel invited to contact us: [email protected]
Focus
Recommended Providers
Portfolio
Answear, forBET, Universal Music, Egmont, Nordisk Film, Coindeal, Warsaw University of Technology, Rosa

DaNoize
DaNoize – app for sports fans
Native iOS and Android apps that allow sports fans to cheer their favorite team remotely, wherever they are.
Goal
Due to the pandemic, the stadiums were closed, and the supporters couldn’t follow the games from the stands. So, our client came up with the idea of creating an app that lets sports teams hear cheering fans who watch the events from their homes.
Our tasks
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native iOS app development,
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native Android app development,
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QA testing.
Challenges
We needed to:
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generate realistic sounds,
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set up real-time data transfer,
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enable high-speed sound transmission,
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reduce data transfer.
Key features
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wide selection of games,
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access to current statistics,
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fans’ ranking,
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teams’ ranking,
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multiple reactions to the events,
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live chat.
Check our website to find out more about this project.

CoinDeal - Crypto Exchange
CoinDeal – a mobile app for the cryptocurrency exchange platform
Native Android & iOS apps for one of the safest cryptocurrency exchange platforms in the world. CoinDeal allows users to buy and sell cryptocurrencies by choosing from over 50 currency pairs.
Goal
Due to dynamic changes on cryptocurrency markets, users need to be up to date with the information on current exchange rates. The goal of our mobile app was to make it possible in a quick and intuitive way.
Our tasks
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giving functional recommendations to client’s design project,
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iOS and Android native app development,
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QA testing,
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integration via API with the client’s system.
Challenges
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the app had to be linked to the user’s account on the exchange to allow making quick transactions,
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we needed to enable real-time data updates to show users current information,
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the app collects personal data and supports making transactions, so we had to implement additional safety solutions that don’t compromise the performance (e.g., biometric authentication).
Key features
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overview of the markets available on the platform,
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a list of user’s wallets with their values in a particular cryptocurrency and US dollar,
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access to real-time market information,
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possibility to make a bid or a purchase in a chosen currency.
Check our website to find out more about this project.

Sprzedajemy.pl - Online Marketplace
Sprzedajemy.pl – a mobile marketplace platform
Native Android and iOS apps for a free online marketplace platform where users sell and buy services or goods. Sprzedajemy.pl is dedicated mostly to individual sellers.
Goal
We wanted to create an application that would allow users to easily manage their listings, search for interesting offers, and contact each other.
Our tasks
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preparing project roadmap and a work plan,
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native Android and iOS app development,
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QA testing,
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integration with API from client’s website,
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project management.
Challenges
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great expectations and high demands from people who already use similar platforms,
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creating easy-to-use, intuitive form for sellers,
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clear presentation of listings filled with big amount of information,
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creating an alternative for a website that would be positively acclaimed by users.
Key features
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overview of the new listings,
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detailed view of a listing with a gallery, description, map, contact info, etc.,
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intuitive form for adding new listings,
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live chat,
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user account with listing overview, transaction history, etc.
Check our website to find out more about this project.

forBET - Sports Betting
forBET – sports betting app for mobile devices and Apple Watch
Sports betting app for one of the leading bookmakers in Poland. With the forBET application, users can make sports bets anytime and anywhere. They can also stay up to date with current promotions and upcoming events.
Our tasks
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native Android and iOS app development,
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development of the first Apple Watch app for a Polish bookmaker,
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designing UX and UI projects,
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QA testing,
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integration with client’s API,
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integration with external suppliers’ solutions.
Challenges
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long-term software development that enables quick updates at a low cost,
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clear, readable data overview – app presents huge amount of information about sport events and betting rates,
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betting had to be simple and require as little actions as possible.
Key features
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overview of the most popular events along with the new promotions and statistics,
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access to pre-game and live bets,
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multiple options for filtering the events (by date, country, and disciplines) available in a single view - first sports betting app in Poland with such a feature,
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personalization (e.g., a list of favorite disciplines or contests; customized list of events),
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live video streaming for chosen events; integration with Twitch and YouTube (feature added to support esports during the pandemic),
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dedicated update distribution system (the app isn’t available on Google Play).
✩ Legal Bookmakers Award 2019: 1st prize in Best Mobile App category
Check our website to find out more about this project.

Answear - online fashion store
Answear – e-commerce app for a fashion store
Native iOS and Android apps for an online fashion store with clothes, shoes, and accessories from over 400 brands.
Goal
We were asked to create a mobile app that brings customers closer to the brand. Our client also wanted us to facilitate access to the store with solutions available only on mobile devices, such as PUSH notifications and constant presence on the home screen.
Our tasks
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active participation in design workshops,
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native iOS and Android app development,
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QA testing,
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project management,
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UX and UI designs were prepared by our partners from mohi.to agency.
Main challenges
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the path to purchase had to be short and intuitive,
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an app with millions of users is more exposed to errors, so we had to find solutions that ensure the best quality,
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Answear has clients in 7 countries and the app must be adjusted to 7 markets.
Key features
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personalization (e.g., a wishlist with favorite products),
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standard e-commerce features (such as advanced search, filters, etc.),
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deep linking between a search engine and the app,
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adjustments to 7 markets,
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a loyalty club.
Accomplishments
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30% higher is the average cart value compared with the website,
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6% lower is a return rate for mobile app orders compared with the website,
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40% of Answear’s clients started to use a mobile app after 3 months since its release,
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Mobile Trends Awards 2017: nomination in M-commerce category.
Check our website to find out more about this project.

VAT Guard
VAT Guard is automatic tool for Amazon FBA Sellers. VAT Guard takes your selling data directly from Amazon Seller Central and provides you with VAT fillings, monitoring your threshold limits all over the Europe and provides you with amount of VAT payments. Filling just one form you can be register in seven EU countries. With VAT Guard you will get personal accountant support and communication with tax authority.

Wrocław Opera
The mobile app for Wrocław Opera is the first production realized by Holdapp using Flutter technology. The app offers users access to the full theater repertoire and news related to this cultural institution. After logging in, the user has access to their tickets purchased through the Wrocław Opera sales system.
The application was implemented in cooperation with the SoftCOM company, integrates with the iKSORIS ticket booking and sale system.
Graphic design of the application created by mohi.to.

Sigia
The Holdapp team proudly supported the Sigia.com project through the implementation of Sigia mobile applications. The model of cooperation with this client was based on team extension principles. Our developers have joined the wider Sigia internal team to develop both mobile applications. The Sigia project enables legally-binding agreements with eIDAS-based signatures compliant with the EU law.

Classic Winnie-the-Pooh
In Classic Winnie-the-Pooh, the well-known Bear, loved by kids and parents alike, goes mobile. This popular app showcases the original illustrations by E.H.Shepard, transformed into interactive animations, and features an informative chapter on the background of the stories, giving insight into the inspirations behind the timeless classic.

Drift Masters European Championship
The official Drift Masters Championship app. It contains the calendar of events of the DMEC cycle, detailed information on each event and news sent via PUSH notifications. The user will also find player profiles, and will be able to take part in live competitions.

Emerald - Air Quality Monitor
Emerald is the ultimate tool for monitoring air parameters at home. Emerald Air iOS app gathers data from Emerald devices using Bluetooth Low Energy and lets you inspect air quality, temperature, humidity and pressure from multiple devices at once. The system will notify you when air parameters are not within acceptable range and will offer useful tips on how to improve them as well. Built-in graphs and stats let you track changes live as well as review historical data.

Trans.INFO
trans.INFO – news app dedicated to transport and logistics
Native Android app for trans.INFO, a popular website and forum about transport and logistics with over 40 000 articles.
Goal
We aimed to create a mobile app with news about logistics, delivery chain, and transport that will always be at hand – no matter if the user is traveling or not.
The biggest challenge was to develop a fully functional app with a fixed budget.
Our tasks
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preparing a detailed roadmap,
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backend and frontend development,
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designing UX/UI projects,
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QA testing.
Key features
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wall with the latest articles,
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user accounts,
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premium zone,
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articles divided into sections with filters,
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forum,
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payment feature,
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section with job offers for drivers.
Check our website to find out more about this project.

ROSA Designer
ROSA Designer app is a visualisation tool for assembly of ZPSO ROSA products.
It helps to compose faultlessly a full park or street lighting set with ease.
ROSA app covers the full range of outdoor lighting products: luminaries, columns, extension-arms or wall-brackets.
User can select surface finish of individual elements from available anodizing color palette.
After product selection ROSA app generates bill of materials, complete with correct concrete footings and mounting sets. From software level You also get access to technical drawings.
Verified user will gain access to bill of materials with manufacturer prices.
ROSA Designer app is also a helpful tool for aesthetic evaluation, You can create visualization by locating chosen lighting set on any landscape photo.

Bamse
Bamse, the world’s strongest bear, is the most favourite bear of children in Sweden. The application includes the most popular audiobooks, movies, and games.

Sky Tower Shopping Mall
Mobile application of Sky Tower shopping mall is a digital equivalent of a plastic store card. Thanks to the app, the user has full access to discounts at shops, restaurants, and service centers. Additionaly, the user is regularly informed of news at Sky Tower and can check list of all premises located in the center. Mobile application is connected to a remote content management panel enabling also sending PUSH notifications to its users.

Arkady Wrocławskie Shoping Mall
Mobile application of Arkady Wrocławskie shopping mall is a digital equivalent of a plastic store card. Thanks to the app, the user has full access to discounts at shops, restaurants, and service centers. Additionaly, the user is regularly informed of news at Arkady and can check list of all premises located in the center. Mobile application is connected to a remote content management panel enabling also sending PUSH notifications to its users.

TrackingDays
TrackingDays – travel tracking iOS app for day counting
With TrackingDays users don’t need to worry if their stay in a foreign country lasts too long. The app keeps track of days spent abroad. It is now used in 60 countries, mostly by global expats and non-residents.
Goal
The objective was to create a time tracking app that would run any time, any place – even if there’s no Internet connection and time zones change.
Our tasks
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native iOS app development,
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native Android app development from scratch (work in progress),
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UI/UX adjustments,
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QA testing.
Challenges
We needed to:
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develop a stable tracking system that takes time zones and clock changes into consideration,
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optimize the app, so it could run in the background due to energy savings,
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build and manage a complex database,
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enable exporting and importing data from the app to different formats.
Key features
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energy-optimized day tracking,
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travels presented in two views based on countries or timeline,
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easy-to-edit trips,
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the original geocoding solution that runs even in offline mode.
Check our website to find out more about this project.

Direct Language Lab
DLL Ebook – language learning app
Educational native apps for Android and iOS. Direct Language Lab is a Polish publishing house that specializes in coursebooks for learning foreign languages based on the direct method. Students in over 30 countries use their publications in language schools.
Goal
The main objective was to give students easy access to educational content from multiple coursebooks and track user’s progress.
Our task
We developed native Android and iOS apps from scratch. Our team was responsible for both frontend and backend development.
The biggest challenge was to present the huge amount of content in a clear, readable way. It had to be properly structured to make navigation easy and facilitate learning.
Key features
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free access to digital coursebooks users already have as paper books,
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QR code that gives access to a dictionary and lessons,
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progress tracking system,
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content divided into sections: vocabulary, translations, audio records,
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a possibility to buy digital coursebooks.
Check our website to find out more about this project.

CAB4YOU
CAB4YOU is a free and handy mobile system for booking taxis with no need to call taxi centre. This intuitive application lets you find the taxi quickly, estimates the cost and a time of arrival. It also inform you as soon as the car is at the pick up address.

Aura - SociAR Messenger
Aura is an innovative approach to online communication. Using augmented reality, it allows users to communicate their mood through real objects and places. Thanks to integration with many popular social media services (Facebook, Instagram, Twitter), Aura is always up to date with the latest statuses, messages and photos shared by the user. Location technology combined with augmented reality makes it possible to share this information at any point of the planet, allowing other users in that location to read our Aura using the AR scanner. In the past, the app also allowed users to process the camera image to create unique designs, which could be later assigned to their Auras and directly purchased on T-shirts thanks to Shopify, Paypal and Printful integration.

CRWSH
CRWSH contains a gigantic car wash base across the country and abroad. Here you'll find the best car wash anywhere you need it. Did you like the service? Was everything fine or something was missing? Write a review and leave a comment for others!

Rasmus Klump
Rasmus Klump is a mobile version of popular Danish fairy tales published by Egmont Publishers. Beside the classic books, the app features many great animations, games, and movies. Since 2013 Holdapp proudly supports and develops mobile application Rasmus Klump, which has a very high position in the Danish App Store.

Smurfs
Smølferne is a Scandinavian series of applications comprising movies, and games for the youngest users.

Elias
Elias is the popular app in Norway, and it has been nominated for The Children Application of The Year 2013. The application includes audiobooks and movies as well as a series of games and awesome animations.

H.C. Andersens Eventyr
H.CH. Andersen’s Eventyr is an application for every young and adult fan of H.CH. Andersen’s fairy tales. The app is a rich selection of audiobooks, books and cartoons, supplemented with a set of mini-games designed with a wizardy flair and imagination. Holdapp created a complete redesign of the app and greatly expanded its functionalities.

Donald Duck Junior
Donald Duck Jr. is the World of the famous Donald Duck transferred onto a mobile's display screen. Traditional books and cartoons about Donald Duck’s adventures have been adapted for the mobile users, and they have been enhanced by adding mini-games and cartoons well-known and well-remembered by the whole generations of his lovers and admirers. Donald Duck app is available on the Dunish, German, Swedish and Norwegian market.

Kiidio
Kiidio is a music player designed for the youngest users. Its simple and intuitive interface allows the child to explore the world of music and audiobooks. The app is integrated with Spotify and it allows administartors to remotely manage content available for children.

Pixi Børnebøger
A collection of digital books that exploits the rich inventory of Lindhardt og Ringhof (Egmont Group) and it's brand for kids, Carlsen. Aside from reading, the app includes a drawing activity that lets kids create and share small booklets, complete with text, drawings, stickers, and a dedication.

Troldeliv
Troldeliv, which means ‘’The Life of Trolls’’, is an adaptation of a popular Danish comics inspired by runic legends and by the spell casts of the old, prepared in the direct cooperation with the authors of the original story.On the iPad screen trolls experience the amazing adventures.
Reviews
the project
Mobile App Dev & Web Design for Training & Coaching Firm
"We're impressed that we're working towards a common goal."
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I’m the co-founder and the chief product officer of a professional coaching and mental well-being platform.
What challenge were you trying to address with Holdapp?
We had a challenge with member engagement. We had a web platform that provides access to vetted professional coaches to enterprise employees and business coaches. In order to increase engagement, we decided that we needed to develop a mobile app. We then hired Holdapp to help us.
What was the scope of their involvement?
The Holdapp team built a cross-platform app using Flutter. The main purpose of the app was to improve our members’ experience, and our existing web app served as a reference while the team was working on our project. We also provided the team with an open API so that they could connect the app to our web platform's backend.
In addition, Holdapp was in charge of developing the platform’s wireframes. We released the app in January, and we’ve extended our cooperation so that they could implement web design updates and provide app support.
What is the team composition?
We’re working with 6–7 people, including their project manager, QA lead, account manager, and designer.
How did you come to work with Holdapp?
I found Holdapp on Clutch after researching possible vendors to work with. Their team was also recommended by one of the vendors we interviewed.
How much have you invested with them?
We’ve spent around $130,000.
What is the status of this engagement?
We began working in May 2021, and we continue to collaborate.
What evidence can you share that demonstrates the impact of the engagement?
After we published the app that Holdapp has developed, our members have given us extremely high ratings because we have a user-friendly platform.
How did Holdapp perform from a project management standpoint?
Their team is collaborative. In fact, we’ve found ways to make sure deadlines are met. We use Jira for project management and Slack to communicate. In relation to that, everything has been easy and there are no communication gaps between us.
What did you find most impressive about them?
We're impressed that we're working towards a common goal. As a result, we don’t feel like they’re working as a separate team. They're also very diligent in providing monthly reports.
Are there any areas they could improve?
They can improve the details of their business analysis process so that we can identify important specifications before development starts. Other than that, they provide a good experience.
Do you have any advice for potential customers?
Start with a design workshop and make sure everybody’s on the same page from the very beginning of the project.
the project
Mobile App Dev for Paid Gig Mobile App
"Their project management is phenomenal."
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I’m the COO at APT Collective Sp. z o.o., a paid gig app.
What challenge were you trying to address with Holdapp?
When I lived in Costa Rica, I was approached by a friend who had a lot of money. He knew me since I was a kid. He told me that he was interested in creating a system that would be user friendly for people who are eager to make additional side money. We wanted to create a system that would be able to create such opportunities for those people.
What was the scope of their involvement?
Holdapp developed our mobile app for iOS and Android. The app is a very easy place for people to meet. If a user needs help to clean their house, they push a button and the system will generate information to get the proper people who can help them.
The team worked from my CEO’s ideas and designed and developed the apps. We stopped along the way because we ran out of money. However, we took an EU grant and continued the project.
What is the team composition?
We work with 4–5 people. I mainly interacted with Artur (Founder/Managing Director).
How did you come to work with Holdapp?
We heard about them by word of mouth.
How much have you invested with them?
We’ve spent over $50,000 so far.
What is the status of this engagement?
We started working together in January 2016 and the work is ongoing.
What evidence can you share that demonstrates the impact of the engagement?
Holdapp was a good choice. They are very reliable, never mess up, and don’t overcharge us. The app is a phenomenon. When we needed to make improvements when we didn’t have any money left, the team was very supportive and showed us some directions.
How did Holdapp perform from a project management standpoint?
Their project management is phenomenal. Whenever we have any issues, we go directly to Artur and he tells us not to worry about it. There have been no communication issues.
What did you find most impressive about them?
Everything has gone very smoothly.
Are there any areas they could improve?
No, there’s nothing I’d have them improve. Any issues we’ve had have been on our side. We weren’t ready for them to implement the new ideas and profiles, or for all the energy they were going to bring to this project.
Do you have any advice for potential customers?
Before you initiate the engagement, invite them to dinner. Sit down with them and become friends.
the project
Backend Dev for Meeting Applcation
"I was impressed by how quickly they were able to come up to speed in understanding our business."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I'm the owner and CEO of Meeting Application - the event app solution for event organizers.
For what projects/services did your company hire Holdapp?
We hired Holdapp for two tasks: 1) building new backend for our product; 2) continuation of iOS application development.
What were your goals for this project?
First of all we needed a new, stable backend. Also, we needed to hire some professionals to help us with continuation of iOS application development.
How did you select this vendor?
Holdapp is well known as a group of great professionals in our local community; We needed trusted company which we could rely on.
Describe the project in detail.
Meeting Application is a native, mobile tool to help our customers manage their events. System is dedicated for iOS and Android platforms. Application is very intuitive with a simple service panel.
What was the team composition?
We hired backend and iOS developers to extend our team. Project management and some parts of development were made internally. Holdapp consultants were hired to fill the gaps in our process.
Can you share any outcomes from the project that demonstrate progress or success?
Our new backend system was launch with success and all clients were switched to that new software.
How effective was the workflow between your team and theirs?
Whole cooperation was very effective. They’re straightforward and easy to deal with. We had a strong cultural alignment with them, and they were very attuned to what we were trying to do. We were very happy with the engagement and overall professionalism.
What did you find most impressive about this company?
Very impressive for us was that they had experience working with relevant technologies. They knew what they were talking about. Also I was impressed by how quickly they were able to come up to speed in understanding our business.
Are there any areas for improvement?
We’ve been very satisfied with all of the work they’ve done and their approach to it as well.
the project
iOS & Android Dev for Web Services Company
"They’re a great partner, one we truly appreciate."
the reviewer
the review
The client submitted this review online.
Please describe your company and your position there.
I am a board member in Sprzedajemy.pl. Also I’m the head of our products - essentially the product owner. Our company is a web-service, which intercede in buying/ selling transactions. Our users thanks to our platform have a space for their classified ad.
For what projects/services did your company hire Holdapp?
We hired Holdapp to build iOS and Android mobile apps.
What were your goals for this project?
Our goal was to make an awesome mobile apps, which will knockout the competition. Also we were focused on the budget, which was defined from the beginning.
How did you select this vendor?
By the recommendation of another trusted company.
Describe the project in detail.
Over a year- long great cooperation we’ve successfully created two awesome mobile apps, which make a way to our clients to be a part of our platform using a mobile phones.
https://apps.apple.com/us/app/sprzedajemy-pl/id1433907916?l=pl&ls=1&mt=8
https://play.google.com/store/apps/details?id=pl.sprzedajemy
What was the team composition?
The team included: project manager (Holdapp), iOS developer (Holdapp), Android developer (Holdapp), QA (Holdapp), backend developers team (Sprzedajemy.pl), UX/ UI designer (Sprzedajemy.pl), Product Owner (Sprzedajemy.pl).
Can you share any outcomes from the project that demonstrate progress or success?
Not yet; our apps has been just released few days ago. But we are expecting the huge benefit coming in to our business as an effect of that new products.
How effective was the workflow between your team and theirs?
Their team understanding of its importance stood out to us. The workflow was convenient and accommodating; but what is the most important: it was working. Team was always willing to adjust their approach to ours, but they also suggested improvements they found effective in the past. We had a great support from the team. Holdapp team met daily for a short status of work and to share with other their plan for the day; whole team working on the project (ux, ui designers, qa, developers, project manager, backend developers) met every 2 weeks with a review, planning and retrospective meetings. We also had irregular as-needed meetings.
What did you find most impressive about this company?
We admire Holdapp’s team ability to understand the project and work together as a partner rather than a vendor. Also their transparency helped us to be incredibly confident that they were doing their best work for us at all times. The team’s extensive knowledge of their field was also noteworthy.
Are there any areas for improvement?
Not really. They’ve our exceeded expectations and continue to do so. They’re a great partner, one we truly appreciate.
the project
Mobile App Dev for E-Commerce Company
"It’s communicative and organized."
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I am the head of software development area for our web and mobile application. ANSWEAR is a Polish multi-brand online store with clothes, shoes, and accessories from the world’s biggest fashion brands presented in seven countries.
What challenge were you trying to address with Holdapp?
We need stable native applications to take part of mobile web users and reach out to new clients who are looking for a simple shopping app.
What was the scope of their involvement?
They built native iOS and Android apps from scratch. Holdapp is still working on other improvements, keeping apps stable and open for other markets.
What is the team composition?
We had one Android, one iOS developer, one QA, and a project manager.
How did you come to work with Holdapp?
We received a recommendation from a friend.
What is the status of this engagement?
The work started in April 2017 and it's ongoing.
What evidence can you share that demonstrates the impact of the engagement?
We have more orders from the app, which is great because we can increase monetization.
How did Holdapp perform from a project management standpoint?
The project management is great. It’s communicative and organized.
What did you find most impressive about them?
They can adjust. If we want to change something, we can.
Are there any areas they could improve?
Not very much.
Do you have any advice for potential customers?
Make sure you know what you want.
the project
Tax Software for Financial & Real Estate Company
"I really enjoy working with Holdapp, especially with the owner of the company because he is incredibly involved."
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I’m the president of the board for the Tax Guard Group. We offer services in the areas of accounting, HR, IT, real estate projects, and developing buildings. We create a block of flats and sell them.
What challenge were you trying to address with Holdapp?
We needed someone to develop software for our company.
What was the scope of their involvement?
Holdapp created software that European Amazon sellers can use to register to VAT. The team added functionality that allows the software to calculate tax returns from the sales when Amazon sellers use the software.
Additionally, the software calculates taxes for every European country. The team built the software such that users can log onto it online via mobile devices, tablets, and every type of computer.
What is the team composition?
The number of people depends on the phase of the project. Sometimes we work with 2–3 teammates, and other times, more. When we need to speed up the process, Holdapp sends more teammates to work on the project.
How did you come to work with Holdapp?
They were recommended to us by someone in our group who said they were really good with software. After calling the owner, we had a few meetings, and then we decided to work together.
How much have you invested in them?
We have spent about $150,000.
What is the status of this engagement?
The work began in about September 2019, and the first part of the product was completed in January 2020. We began selling the product, but we are still working with Holdapp.
We are making amendments to the software, which depends on the VAT laws in every European country. So, if those VAT laws change at all, we need to make changes to the software.
What evidence can you share that demonstrates the impact of the engagement?
The software is very useful and flexible.
How did Holdapp perform from a project management standpoint?
We use Jira, which allows us to send them requests, ask questions, and check the progress of the project in relation to the deadlines. Additionally, we have weekly conference calls where they always summarize what has happened the previous week and we discuss our expectations for the upcoming week.
The project has gone quite smoothly thus far. Sometimes, deadlines were pushed back but this was mostly because we changed our expectations. During the development, we learned how it works in Amazon and how VAT works in every European country, which is why the deadlines were sometimes pushed back.
What did you find most impressive about them?
I really enjoy working with Holdapp, especially with the owner of the company because he is incredibly involved in our project. Amazon code and source are quite difficult, and the owner spends a lot of time helping us connect our product to Amazon. I am very grateful for this.
Are there any areas they could improve?
They are on the other side of Poland and we mostly meet via Skype or WhatsApp. The most difficult part has been not being able to meet face to face, but that would’ve been really costly.
the project
Mobile App for Foreign Language Publisher
“Their testing and quality assurance are great. It makes the apps very reliable.”
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I'm one of the owners of a foreign language publisher.
What challenge were you trying to address with Holdapp?
We needed help with mobile app development.
What was the scope of their involvement?
They provided programming services, from designing the first and second apps, to developing them. We provided the content and ideas. It's available on iOS and Android.
What is the team composition?
We had a project manager, but we also worked with several other developers.
How did you come to work with Holdapp?
We found them through an internet search. They were selected after a series of video interviews.
How much have you invested with them?
We've invested $75,000.
What is the status of this engagement?
We began working together in June 2016, and our engagement is ongoing with maintenance.
What evidence can you share that demonstrates the impact of the engagement?
Their quality is very good. It's great they have an in-house testing team because customers are quick to send an app back if there's a bug.
How did Holdapp perform from a project management standpoint?
They've always done well. We always talk through a project manager for updates. We're quite satisfied.
What did you find most impressive about them?
Their testing and quality assurance are great. It makes the apps very reliable.
Are there any areas they could improve?
The only downside is that they're not very flexible if we need something updated quickly. They just might not be available. If it's a bigger project, things usually go to plan.
Do you have any advice for potential customers?
You need to know what you want and do all of the planning before contacting them.
the project
iOS Development for App Developer
the reviewer
the review
A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.
Introduce your business and what you do there.
I’m an account manager for an app developer.
What challenge were you trying to address with Holdapp?
We sometimes need staff to augment our team when we don’t have enough developers in-house. In this case, we needed iOS developers.
What was the scope of their involvement?
They provided iOS development for us. They started the app, which is a 3D sound system, from scratch. Phones can connect to it via Bluetooth.
We sent them all the requirements, the designs, and wireframes. They worked closely with our team. We had created an Android app internally, so all the developers worked together on the iOS project.
What is the team composition?
We collaborated with two members of their team, working in scrum with direct communication with our developers.
How did you come to work with Holdapp?
We’d worked with them before, and I believe our CEO knows someone from their company. We did consider a couple of other companies, but we checked the code they had all created, and Holdapp’s was what we were looking for.
How much have you invested in them?
We spent around $30,000.
What is the status of this engagement?
We worked with them on this project from March–June 2018.
What evidence can you share that demonstrates the impact of the engagement?
We did code reviews on our side and we were really happy with them. The quality of their code was really good, and the client was also very happy with the iOS app. The development went quicker than with the Android app, which was great.
How did Holdapp perform from a project management standpoint?
Both developers had experience with the scrum methodology, so it went very smoothly. From our perspective, it was a huge bonus.
The communication was consistent both in our office and over Slack when they worked remotely. They logged their time transparently, and we could trust them to complete their work.
What did you find most impressive about them?
They told us when they didn't like something or through we could find a better approach. We didn’t feel like we were just a client—it felt like a real partnership, and we learned a lot from them.
Are there any areas they could improve?
I don’t think so. Everything really went well.
Do you have any advice for potential customers?
Be transparent with them. Previously, we’ve not given all the required information to developers and they’ve been misguided due to that. Holdapp has a team of professionals, and they can help you from both an IT and a business perspective. They’ve created a lot of apps and can suggest cool ideas.
the project
Polish Lighting Company Mobile Application
"[This] app could be one of the best examples of how to use mobile devices in your professional life."
the reviewer
the review
The client submitted this review online.
We manufacture lighting sets, such as street and park lights, of various types and sizes, employing about 250 people, and located in Poland.
I'm an IT [information technology] consultant, responsible for managing a project's financing, and taking part in the designing, production and implementation stages.
We are trying to increase growth along with decreasing costs. If we can reliably present our products in the correct markets, we can accomplish both goals.
Mobile devices are the perfect medium of implementation of our marketing strategy. If we want to reach new customers, satisfy the current customers and create a modern image of the company, we can't ignore mobile.
It's always difficult to imagine how lighting sets, composed of many different parts, would look like in real life. [The mobile application] simulates the way of mounting all the elements into one, complete lighting set.
The set can be saved and read from mobile devices whenever it's necessary, it can be rotated and seen from below and above, and can be painted or anodized into many different colors.
It's possible to obtain a bill of materials or pricing list, place the lighting set on your street or park image and to decide whether it fits to the landscape or not. Finally you can print it out, mail to investors or send the order to the manufacturer.
To design the application, it was necessary to mathematically describe all the components, produce 3-D models, and choose the appropriate rendering engine. A lot of data from ERP [enterprise resource planning] systems had to be moved to the mobile device to make the system function. The results were strong.
The result is better than anyone could expect. All the required functionalities were met, even the really sophisticated features. The application works smoothly, even on iPads of previous generations.
On the other hand, it uses many of the features of mobile devices, such as rendering 3-D models with zooming, rotating, and changing colors – just with a couple of finger taps. The app uses the camera, image resources, mailing possibilities, and so on. Our app could be one of the best examples of how to use mobile devices in your professional life.
Feedback from our clients, sales representatives, and our own sales force is great. This application enables you to see the product before it's going to be manufactured and placed into reality.
I suggest everyone try working with Holdapp.
the project
Application Development for Media Group
"Holdapp goes beyond the contract to meet special needs and new ideas."
the reviewer
the review
The client submitted this review online.
[Our company] is a leading media group in the Nordic countries with activities in 30 countries and 6,300 employees. [We are part of a group that is] a leading magazine publisher in the Nordic countries and commands leading positions in a number of other markets. [Our company] produces more than 700 weekly and monthly magazines as well as children's books, including licensed brands. [My] department is a department under [the main company] designing mobile apps for kids. I'm a lead UX [user experience] designer and product owner [for my department].
[Our goal was to] increase revenue and retention in our kids apps in the Nordics, primarily aiming at preschool kids and their parents.
[We have] been working with Holdapp on a number of projects since 2011. Holdapp provides iOS and Android app development, preparation implementation of assets like graphics, sound, and animations, and takes care of testing and final submission. Holdapp is an agile company and works with extensive scrum practices.
We are generally very satisfied with Holdapp's performance regarding service, support, and quality. We believe that the company possesses the right competencies and will to fulfill the project scope.
Holdapp goes beyond the contract to meet special needs and new ideas. It is our experience that they feel committed to our brands and projects.
Holdapp has received extremely positive feedback due to the user-friendliness of the app they've developed. The team is collaborative, communicative, and diligent. The ongoing collaboration is possible with the team's exceptional performance.