Web and Mobile Apps, Design and Development

Looking for a reliable partner? You're in the right place.

We focus on Product Design (UI/UX), Web (Node.js, ASP.NET Core, Laravel, React, Angular, Vue) and Mobile (Swift, Kotlin, Java) Development, BigData and Machine Learning (ML) Solutions as well.

Here at Mentalstack, we believe that nowadays a product should be as smart as beautiful, we help our clients to achieve their business goals faster through the unity of design and technology thinking.

What sets us apart from others, some key facts:

— Microsoft Certified Development Partner;— Top-3 Russian Development companies on Clutch;— Reliable tech-disruptive partner for international Startups, SMBs and Enterprises;— A multidisciplinary in-house team of 60+ IT professionals does a product UI/UX Design, Web and Mobile Development, QA, DevOps, Project Management and Consulting;— Agile-driven Scrum & Kanban collaboration, 1-2 weeks short iterations (sprints), fast and predictable product delivery as a result;— Time & Material or Dedicated Team approaches;— Transparent process: standups, reports, CI/CD, sprint demo, clear communication;— SLA support and long-term collaboration;— All rights for product brand and source files belong to the client and stored on their side;— Three months warranty on the product.

Visit our website to know more about us.

Let's get in touch!

 
$10,000+
 
$25 - $49 / hr
 
50 - 249
 Founded
2016
Show all +
Taganrog, Russia
headquarters
other locations
  • 3B Mayakovskogo St
    Saint Petersburg 191025
    Russia
  • 139/94 Tekucheva St
    Rostov-on-Don 344018
    Russia

Portfolio

Key clients: 
Daymon, Standard Bank, Zirra, Lineslip Solutions, Prosmar, Offshore Heavy Transport, i-Surance, Parknav, Waft
Virtual customization retailer Image

Virtual customization retailer

Web project from Singapore built with Node.js, Angular, TypeScript, Mongo, and hosted on AWS. It’s time to think differently about your perfume. It’s time to explore the possibility of your very own customized fragrance – your unique personal calling card. Already work, profitable, ready for high-loads. Custom complex perfume constructor, ordering system, discounts system, credit card processing.

Award-winning speech recognition web app Image

Award-winning speech recognition web app

Award-winning speech recognition web app. This app is especially interesting for radio stations, podcast providers, and TV stations, and built with Node.js, Angular, ExtJS, TypeScript, Mongo, and hosted on AWS. By means of our innovation, audio files are converted into a text in the shortest possible time. The content can be shared with one click directly on multiple platforms, e.g. on websites, in the app or Facebook and

Twitter
Twitter for cryptocurrency fans, traders, professionals Image

Twitter for cryptocurrency fans, traders, professionals

This web app is something like Twitter for cryptocurrency fans, traders, professionals. Built with Node.js. Angular, hosted on AWS. The concept of the site is a social media site very similar to that of stocktwits.com. In fact, the functionality is exactly the same. The site has a page for each stock, in which a user can comment on in the feed, stream. Each user has their own profile etc. It’s connected to a stock

(crypto-currency) data etc. Much of the user, profile, feed functionality is built into stream API.
Weather forecasts mobile app Image

Weather forecasts mobile app

Weather forecasts mobile app for iOS and Android, from certified experts, professional meteorologists with degrees in Atmospheric Sciences/Meteorology, built with Swift, Kotlin.

Dating, chat-roulette like mobile app Image

Dating, chat-roulette like mobile app

Dating, chat-roulette like mobile app based on SOUL platform and VoxImplant technologies and infrastructure from Hong Kong. SOUL is a cloud platform which helps to create full-featured dating apps without writing a single line of server-side code. Real-time matching, messaging, custom filters, adaptable video-streaming, and a lot of other cool features.

Cryptocurrency, ICOs mobile app Image

Cryptocurrency, ICOs mobile app

Cryptocurrency, ICOs mobile app. The great assistant in the information flow! It combines the functions of a modern catalog (list) and a personal account in one useful app with a great design. The application monitors the events of cryptocurrency crowdfunding, systematizes the information, quickly scores each ICO (Initial Coin Offering)

Reviews

Sort by

Prototype Dev for Business Technology Startup

"Everything that they produce is something that adds value to the process."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
Less than $10,000
 
Oct. 2019 - Jan. 2020
Project summary: 

Mentalstack designed and developed the wireframes for the client's prototype, working in 2-week sprints. Along the way, they assisted with the pitch deck and design. 

The Reviewer
 
1-10 Employees
 
New York, New York
Kiran Bajwa
Co-Founder, RUMJog Enterprises
 
Verified
The Review
Feedback summary: 

The team at Mentalstack is talented and professional. Their project management is streamlined and efficient. They have exceptional communication skills and strive to fulfill their client's needs. 

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We are a career focused start up. I am the Co-Founder.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

We hired them to help with Design & Prototype

What were your goals for this project?

Have something tangible so that we could have next stage of conversations and really validate our idea.

SOLUTION

How did you select this vendor?

They were recommended.

Describe the project and the services they provided in detail.

They designed and developed all of the wireframes and also assisted with our pitch deck. They work in 2-week sprints so we started with discussing the idea and mind mapping the product. We then developed the wireframes by feature will allowed to iterate as we went. We had a completely working design at the end which we were able to use to see all of the functionality.

What was the team composition?

We had a designated project manager with multiple designers. We primarily interfaced with the PM only, which make it much more efficient for us. It would have slowed the process down if we had to interface with multiple parties separately.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

We are very early in the startup lifecycle so there hasn't been a direct business impact yet. However, the deliverables from this project have clearly helped us to further asses product-market fit.

How was project management arranged and how effective was it?

The project manager assigned to us was very talented. Very effective in helping us think through everything and really determine what is important and valuable. She also is extremely professional, meets with us daily to ensure everything is to our satisfaction.

What did you find most impressive about this company?

They get it. The understand the lifecycle of startups. Everything that they produce is something that adds value to the process. Where ever you are in the journey. Whether your going to raise or get feedback, their deliverables help you to accomplish your goals.

Are there any areas for improvement?

There is very little they can improve. The only improvement is make sure you are clear on deliverable timelines. They are a great agency so they are busy and you just need to have conversations upfront on how resources will be dedicated to your project.

5.0
Overall Score They have excellent communication skills. Very talented team and you don't feel as if your just another client, they really gave their attention.
  • 5.0 Scheduling
    ON TIME / DEADLINES
    Easy and always available, as needed
  • 5.0 Cost
    Value / within estimates
    Very fair and reasonable. They work with you, within your budget. Very open and flexible to find a way to collaborate
  • 5.0 Quality
    Service & deliverables
    Very well designed wireframes
  • 5.0 NPS
    Willing to refer
    Very likely.

Web Development for Energy Statistics Company

"Mentalstack's design work, as well as their ability to incorporate feedback and changes as needed, impressed us."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
Sept. 2019 - Ongoing
Project summary: 

Mentalstack redeveloped and redesigned a website for an energy statistics company. The team also created a new logo and branding, building the wireframes and mockups for the site.

The Reviewer
 
1-10 Employees
 
New York, New York
CEO, Energy Statistics Company
 
Verified
The Review
Feedback summary: 

While the project has not yet launched, the development has met the expectations of the internal team. Mentalstack establishes a smooth workflow, effectively managing projects. The team is receptive to feedback and willing to make the necessary changes. 

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We provide information on the energy use of home electronic devices and are branching out into reviews and offering energy-saving ideas for consumers.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

Our site design was outdated - we wanted to make it easier to use, as well as incorporating some new pages/features. We hired MentalStack to oversee a complete redevelopment of the site.

What were your goals for this project?

We wanted a site that would be more usable for visitors, as well as having a CMS that would make it easier for our contributors to keep our content up to date.

SOLUTION

How did you select this vendor?

We read a number of reviews on Clutch and elsewhere and narrowed the field to 3 prospective agencies which we got bids from and spoke with. We ended up going with MentalStack because their bid seemed reasonable and we liked their approach to development.

Describe the project and the services they provided in detail.

They worked with us on the redesign of the site, including the development of a new logo/brand and wireframes + mockups of all the pages on the site. They worked closely with us at each stage to make sure that the deliverables were consistent with what we were looking for. We're just starting the technical aspect of the project.

What was the team composition?

The project team consisted of a project manager, one primary UX/UI designer and drew on additional internal design resources (e.g. illustrators) as needed. We're just beginning the technical side of the project, for which they'll provide engineers and QA.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

The project hasn't launched yet.

How was project management arranged and how effective was it?

Project management was very effective, we collaborated with a project manager primarily via Slack and was extremely responsive and effective in gathering feedback and making appropriate changes.

What did you find most impressive about this company?

Mentalstack's design work, as well as their ability to incorporate feedback and changes as needed, impressed us.

Are there any areas for improvement?

Nothing comes to mind.

5.0
Overall Score Would highly recommend to anyone looking for full service development shop.
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
    Very reasonable
  • 5.0 Quality
    Service & deliverables
    Consistently high quality work, happy to incorporate feedback and make improvements as needed.
  • 5.0 NPS
    Willing to refer

Staff Augmentation for Web Dev Projects

"We look for people willing to learn and adapt fast to new environments, and that's what we've found with Mentalstack."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
Feb. 2019 - Ongoing
Project summary: 

Mentalstack provides staff augmentation for an energy company’s internal development team. They utilize AWS, JavaScript, HTML5, CSS3, and Vue.js to develop several scalable applications.

The Reviewer
 
11-50 Employees
 
Berlin, Germany
Juan Pablo Rivillas
Release Manager & Techincal Lead, Energicos Gmbh
 
Verified
The Review
Feedback summary: 

The project has been extended into an ongoing collaboration because of the quality of Mentalstack’s work. With extensive knowledge of various technologies, their team is able to adapt quickly to changing project requirements. They are collaborative and responsive to feedback.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

Our company is an Energy focused company that focuses on Infrastructure for Air Conditioning. We build software to support the tasks from the internal team. I am the Technical Leader

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

We built our product from scratch and Mentalstack helped us providing Software Developers to build our frontend and backend. We built a software with cutting edge technologies that allows us to build fast and scalable applications for our team.

What were your goals for this project?

We had to cover an architecture that allowed us to maintain the Software in the future, focusing on Scalability and easiness both on the client side and the development side. We chose the AWS infrastructure and we built a suite of tools on top of that, which give our team a better vision of the components of the company and allows us to have a data centric application.

SOLUTION

How did you select this vendor?

We found them at Upwork and they had a very good reputation. Their team passed our technical interviews with high quality work.

Describe the project and the services they provided in detail.

They developed part of a frontend and backend application using technologies like AWS, Nodejs, Javascript, HTML5, CSS3, and Vuejs. Using a microservices and serverless architecture, they were able to deliver the APIs and tools needed by our team. We improved the requirements and architecture through the time and they adapted easily to all the changes that we proposed.

What was the team composition?

The team has provided multiple software developers with multiple profiles, including two backend developers and two frontend developers.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

We wanted to build a solid team with general understanding of our stack. The level and complexity of the solutions we faced were high and the team responded in an excellent manner. After some months working with the mentalstack team, we decided to form a solid and long term team. Besides, the mentalstack team is able to scale up and down depending on our business and season needs.

How was project management arranged and how effective was it?

The entire management and development has been always a co-participation since we have a dedicated team working with the mentalstack developers. In consequence, the management provided was a plus but was not our main business need. We like to have control of all our Software Development Cycle. Although, every time we needed anything, it was provided as soon as possible with an excellent cooperative spirit.

What did you find most impressive about this company?

The quality of the developers is very good. We don't look all the time for developers focused in one or two technologies. We always look for people that can solve problems disregarding the technologies. We look for people willing to learn and adapt fast to new environments, and that's what we've found with Mentalstack.

Are there any areas for improvement?

We've had success in almost all the projects we've done together. The only thing that I would suggest is to enforce the necessity of cultural fit adaptation of their developers into other teams. Nonetheless, I believe that our situation might be unusual, because we like to have their developers working with our developers, both parts immersed. That's why I believe our projects have been a bit different, requiring extra requisite, with some struggle in a few occasions but always with a successful outcome. Thanks for all guys!

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

UI/UX Design for Sporting Events & Coaching App

"I was impressed by Mentalstack's vision and experience."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
Aug. - Sept. 2019
Project summary: 

After conducting market research and creating initial design work, Mentalstack produced a clickable prototype for an extreme sports mobile app. The team also delivered wireframes, graphics, and color schemes.

The Reviewer
 
1-10 Employees
 
United Kingdom
Founder, Skydiving & Parachuting Startup
 
Verified
The Review
Feedback summary: 

Internal stakeholders are pleased with Mentalstack's designs. Through maintaining open lines of communication, the team was able to foster a seamless partnership. Customers can expect a knowledgable and committed partner.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We are a new startup for Skydiving and Parachuting industry. Our business will evolve around the mobile application we are developing.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

We hired Mentalstack to create a breathtaking, and unique design for our mobile IOS and Android application.

What were your goals for this project?

Our goals were for UI/UX design which will be implemented to our mobile app, which Mentalstack will also be assisting us with. We searched online for mobile application developers and compiled a list of 4 companies based on studies of their online presence and portfolios. After receiving proposals for 3 developers we were most impressed by Mentalstacks vision and well prepared proposal and decided to proceed with them.

SOLUTION

How did you select this vendor?

We searched online for mobile application developers and compiled a list of 4 companies based on studies of their online presence and portfolios. After receiving proposals for 3 developers we were most impressed by Mentalstacks vision and well prepared proposal and decided to proceed with them.

Describe the project in detail.

Mentalstack completed market research to make themselves aware of popular products in the same niche with the aim to best understand the user base. A Moodboard was delivered with ideas which could be applied as references for future design. Next step was building an in-depth mind map for user's paths. Finally, they made clickable prototype for whole app, the last thing was working on UI, color scheme, graphics and illustrations, and breathed life to rough wireframes.

Being a niche sport there were concerns about getting the right message across but Mentalstack handled it well and communication throughout was great. We were involved with the design throughout the whole process so very little revisions were required. The vendor offered their own opinions and guidance along the way and the end product fitted our expectations.

What was the team composition?

The design team was flexible but mainly consisted of a Project Manager, a Designer and an Art Reviewer.

RESULTS & FEEDBACK

Can you share any outcomes from the project that demonstrate progress or success?

Currently our mobile application is still in development but with a successful design stage now completed with Mentalstack, we will be continuing with development with the vendor.

How effective was the workflow between your team and theirs?

Regular daily communications with the Project manager was completed using Skype and phone calls as and when required. Communications were always clear and efficient.

What did you find most impressive about this company?

I was impressed by Mentalstack's vision and experience. Getting my ideas across and onto paper were easy and the final design represented their hard work and dedication.

Are there any areas for improvement?

We were very satisfied with their work along the way. We ended up with a beautiful final product and are eager to continue onto development with Mentalstack. Being our first venture into app development Mentalstack assisted us throughout the process and made things easy.

5.0
Overall Score Good expierence working with Mentalstack and look forward to development.
  • 5.0 Scheduling
    ON TIME / DEADLINES
    No issues with scheduling and everything completed with timeframe.
  • 5.0 Cost
    Value / within estimates
    From the 3 proposals we initially received Mentalstack was the most reasonable.
  • 5.0 Quality
    Service & deliverables
    Very happy with the design.
  • 5.0 NPS
    Willing to refer
    Very likely to refer to a friend.

Quividi Websocket Facial Recognition Web Application

"Our direct access to the project manager and the team was critical to the project's success."

Quality: 
5.0
Schedule: 
4.5
Cost: 
4.5
Willing to refer: 
5.0
The Project
 
Confidential
 
Sept. 2018 - Dec. 2018
Project summary: 

Mentalstack created an interactive AI touchscreen for a creative agency. Using Quividi software with reporting measures, they built a unique product linked to demographics.

The Reviewer
 
11-50 Employees
 
South Africa
Chantelle Weldon
Traffic & Project Manager, Thwack
 
Verified
The Review
Feedback summary: 

This is the first product of its kind in the South African market. Mentalstack was available at odd hours and helped solve urgent issues or technical problems whenever they arose. 

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We’re a team of creatives, engineers, makers, and designers with decades of marketing and advertising experience. By combining our knowhow with the latest technology, we create immersive, experiential activations for our users. We build each project from the ground up, which sometimes means inventing our own processes when needed. Our aim is to reach the hearts of our consumers in an engaging, relatable way. 

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

We approached Mentalstack to assist us with an interactive AI touch screen that uses Quividi software with reporting measures.

What were your goals for this project?

Our goal was to display certain videos uing AI based on demographics. We hoped to create results that we could measure. 

SOLUTION

How did you select this vendor?

I was not a part of the selection process.

Describe the project and the services they provided in detail.

They assisted with all of our development needs for this project.

What was the team composition?

We had a dedicated project manager who gave us daily updates. He managed a team of developers who worked tirelessly behind the scenes.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

No one has created technology like this in our market, so this is a first in South Africa.

How was project management arranged and how effective was it?

The project manager made himself available to us every day and helped us onboard developers for urgent late-night and weekend work when we faced any problems.

What did you find most impressive about this company?

Our direct access to the project manager and the team was critical to the project's success. We could brief them whenever we had to clarify any of the related technical issues.

Are there any areas for improvement?

Because of the time difference, the project manager wasn't always available during our meeting times. We also faced occasional delays in communication, and sometimes had to wait for quotes to complete project elements.

5.0
Overall Score
  • 4.5 Scheduling
    ON TIME / DEADLINES
    Sometimes delayed with time difference
  • 4.5 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
    Great overall
  • 5.0 NPS
    Willing to refer
    Overall great experience

iOS Proof of Concept for IT Consulting Company

"They quickly deliver excellent UX and design work and high-quality code."

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
July 2018 - Ongoing
Project summary: 

Mentalstack is designing and developing a proof of concept for iOS. They have added advanced features, created the entire UX, and managed the production release. 

The Reviewer
 
11-50 Employees
 
New York, New York
Eugene Vereshagin
Managing Principal, Stellar Solvers LLC
 
Verified
The Review
Feedback summary: 

The product has great potential to boost sales, gather consumer information, and promote services. Mentalstack's diverse expertise and transparent, meticulous management enables them to deliver within tight deadlines. The team is always creative, enthusiastic, and approachable. 

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

We're an IT consulting company that designs and develops custom enterprise systems.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

We hired them to design and develop a mobile application. My team of strong backend developers needed an infusion of talented UX designers and native mobile developers.

What were your goals for this project?    

We aimed to rapidly prototype a private enterprise mobile app. We wanted to experiment with emerging technologies that focus on great UX, information security, and speed to market.

SOLUTION

How did you select this vendor?

After weeks of thorough screening and dozens of interviews, we selected Mentalstack for a long-term strategic partnership. We were happy with our pre-sale collaboration and support, their excellent communication skills, and their attention to detail. They also offered a risk-free trial period that showcased their collaborative work style and UX design skills.

Can you go into detail about the services they provided and the scope of the project?

We began working with Mentalstack in July 2018. The team built an exciting, challenging proof of concept for iOS. They had a tight two-week timeline that most considered unrealistic, putting their team to the test. The product looked stunning and implemented cutting-edge features. Once it passed the proof of concept stage, we added more exciting features and strengthened the code for our first production release.

What was the team composition?

The team consists of several part-time UX experts and designers, two full-time iOS developers, a part-time QA specialist, and a project manager.

RESULTS & FEEDBACK

Can you share any information that demonstrates the impact that this project has had on your business?

The product will enable our customers to tap into important and previously inaccessible insights, share information, promote specific services, and ultimately improve sales.

How was project management arranged and how effective was it?

Their project managers are highly qualified, full of energy, enthusiastic, and fluent in English. They always speak their mind and never hide inconvenient information, which keeps everyone honest.

What did you find most impressive about this company?

It's all about speed, quality, and value! They quickly deliver excellent UX and design work and high-quality code. Their managers are accessible and responsive, their developers offer a diverse skill set, and their designers are creative and extremely fast. They can work creatively with vague or limited requirements, manage frequently changing priorities, and work calmly under pressure. Since they're a fun team with great personalities, working with them is a pleasure. The team exceeds our expectations!

Are there any areas where they can improve?

They should provide better access to technical staff and improve the depth of their technical documentation. To be fair, our project focused on rapid development and speed to market.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

MVP iOS Development of Mobile Game

“With a customer-first attitude, their team worked quickly and productively.”

Quality: 
5.0
Schedule: 
5.0
Cost: 
4.0
Willing to refer: 
4.5
The Project
 
Less than $10,000
 
Mar. - June 2018
Project summary: 

Mentalstack developed four iterations of a mobile game for iOS devices. The project ended prematurely, but their final deliverable was a functioning MVP that achieved all technical requirements.

The Reviewer
 
1-10 Employees
 
Munich, Germany
Maxat Karimov
Owner, Mobile App
 
Verified
The Review
Feedback summary: 

In testing, the MVP’s functionality met all expectations. The team’s determined approach to the project resulted in a quick turnaround time for each iteration. Their industry expertise and high collaborative skills laid the foundation for a productive engagement.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

I had an idea for a mobile app game called Solopreneur.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Mentalstack?

With no prior experience in gaming or development, I needed to outsource the work.

What were your goals for this project?

I wanted to build a minimum viable product (MVP) and test it with a small group of users.

SOLUTION

How did you select this vendor?

I conducted an online search and shortlisted several candidates. Each shared a pitch based on my development brief. Mentalstack showed a result-oriented attitude and exceptional agility in their proposed approach to the project. I also reviewed their reputation on Upwork, which was largely positive.

Describe the project in detail.

Mentalstack began building an iOS application. After four development rounds, we had a working MVP, but I chose to pause the project for personal reasons. I relocated and needed to focus on generating income in a new country. My decision had nothing to do with Mentalstack, they performed well throughout our engagement.

What was the team composition?

I spoke with the lead software developer daily, but I was also in contact with a customer support representative.

RESULTS & FEEDBACK

Can you share any outcomes from the project that demonstrate progress or success?

We tested the MVP on our same Wi-Fi network and the application met the key functional requirements.

How effective was the workflow between your team and theirs?

The collaboration was smooth and effective. Their team was technically knowledgeable and proficient.

What did you find most impressive about this company?

With a customer-first attitude, their team worked quickly and productively.

Are there any areas for improvement?

There are no areas come to mind.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
    There were no issues in terms of scheduling.
  • 4.0 Cost
    Value / within estimates
    They offer good value for money, but there are cheaper options.
  • 5.0 Quality
    Service & deliverables
    They were very responsive to feedback. We had a basic MVP after two rounds.
  • 4.5 NPS
    Willing to refer

Native Mobile App Dev Projects for Development Agency

“They’re working with a dozen other companies, yet they make us feel like our needs are their top priority.”

Quality: 
5.0
Schedule: 
5.0
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$50,000 to $199,999
 
Apr. 2018 - Ongoing
Project summary: 

Mentalstack is developing two full stack apps, which will be available on web, mobile, Android, and iOS platforms. The complex algorithms that they integrated create a personalized UX.

The Reviewer
 
1-10 Employees
 
Los Angeles, California
Founder, App Development Company
 
Verified
The Review
Feedback summary: 

The apps’ stunning, user-friendly designs can be credited to the immeasurable talent of Mentalstack’s development team. While their regard for post-release bugs is lacking, they make up for it with their attentiveness to core development and client satisfaction.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I’m the president and founder of a development agency. We partner with agencies to develop products and services, in addition to engaging with our clients on internal projects.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Mentalstack?

We needed help completing trial projects for two of our clients.

SOLUTION

What was the scope of their involvement?

We initially brought Mentalstack onboard to assist with just foundational work, but as time progressed, they were involved in every facet of app development. One of the products that they helped us develop was a blockchain app that allows users to invest in cryptocurrency with ease. We gave them a mockup of the design, and they built to our specifications. They also helped us with an early web release and included more features that weren’t in our original vision

The second app was a winery platform that connected wine lovers to beverages with an algorithm that analyzes their disclosed taste palate. We didn’t provide raw mockups for this app, so they had to redesign the app concepts from our PNG files. They also helped us with an early web release for the blockchain app. They also included more features that weren’t in our original vision.

Both apps are fullstack, so they’re available on all platforms including web, iOS, and Android.

What is the team composition?

We mostly interact with their project manager. Having multiple points of contact can be overwhelming, so we appreciate them for having one designated liaison.

How did you come to work with Mentalstack?

I discovered them while searching for app developers on Upwork. The project we initially hired them for was scrapped due to our client's funding. When future projects came along, we reached out to them via Skype and offered them the job.

How much have you invested with them?

We spent a little more than $65,000 to develop both apps.

What is the status of this engagement?

They’ve been working on the apps since April 2018.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

Mentalstack is very results-driven, so we do not doubt that their work will live up to our expectations. Everything that they’ve produced for us so far has been incredible, but a few small bugs have popped up. We understand that they don’t want to take attention away from core development, but it makes us look bad to our clients when they’re taking weeks to resolve simple issues. To prevent this, we hired an in-house developer to work with them on post-release bugs.  

How did Mentalstack perform from a project management standpoint?

Our teams have biweekly meetings to discuss which features are on the agenda for development. We used Jira to cross-reference the sessions with work tickets, and they used the platform to provide frequent updates on their progress.

What did you find most impressive about them?

The project manager was extraordinary at his job. They’re working with a dozen other companies, yet they make us feel like our needs are their top priority.

Are there any areas they could improve?

They tend to neglect smaller tasks, which could easily be avoided by bringing a designated engineer on board to resolve technical issues while the rest of their team works on new developments. We also don’t like how pushy their sales team are, but we understand that’s common for most companies.

5.0
Overall Score
  • 5.0 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

Native Mobile App Dev for Technology Consulting Company

"The app is so much more usable and is now spotless."

Quality: 
5.0
Schedule: 
4.0
Cost: 
4.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
Sept. 2017 - Ongoing
Project summary: 

Mentalstack worked on native mobile applications for Android and iOS, taking an existing app and API then developing them further, based off designs and wireframes.

The Reviewer
 
1-10 Employees
 
New York, New York
Manager, IT Company
 
Verified
The Review
Feedback summary: 

Working from no documentation, the team was able to understand the project quickly and build out effective apps that function well and are bug-free. They displayed excellent attention to detail, managed the project effectively, and communicated well.

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I'm the manager of a technology consulting company. One of the things we do is outsource development work for apps for our clients.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Mentalstack?

Our client had an app that had been in development for a year. It was unfinished and had a lot of features that were missing. We took over the project and needed someone to take on the development.

SOLUTION

What was the scope of their involvement?

The application is for both Android and iOS, and we hired Mentalstack to develop both, as well as to build out the API. The applications are native, for a client with a general membership of several thousand people that they want to keep in touch with. They also want to post news and get information from the members, conduct polls, and include some event functionality.

We didn’t have much from the original developers to provide to them. We had to schedule several meetings with the Mentalstack managers in order to explain the project. We had designs and wireframes which we gave to them.

How did you come to work with Mentalstack?

We found them on Upwork. We posted the project, and they were one of the biggest companies that replied to us. We felt safe giving the project to a larger software house.

How much have you invested in them?

We have invested around $50,000.

What is the status of this engagement?

We started working with them in September 2017 and the work is still ongoing. The project is in its later stages.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

The project itself had a lot of features and a functional API already developed. They had to take all of that without any documentation. We were unable to provide them with any information about what the API did and where the bugs were coming from. They had to understand what they were doing and did it without our help.

They pay great attention to detail. Compared to the version they got when they started the development, the app is so much more usable and is now spotless.

How did Mentalstack perform from a project management standpoint?

We communicate with them through their managers, but we have access to the help desk and we can see what they're doing. They have a lot of people on staff, besides the programmers, who take care of testing, reporting, and other things.

We pay them through Upwork, and through the Upwork platform there is time tracking for each developer, so we can pay them based on the hours they work. Additionally, they use HubSpot internally, and I use their HubSpot reports to complete my own reports based on the tasks completed.

What did you find most impressive about them?

The most impressive thing is when we tell them about any new features or changes that the client requests from us, they are able to understand right away and do it without having to go back and forth.

Are there any areas they could improve?

It would be good to have a little bit more communication directly with the programmers because we mostly deal with the managers. I can communicate with the developers through Atlassian, the task management program that they use, but generally, if the developers have questions, they don’t ask; they ask their managers who then come to us.

5.0
Overall Score
  • 4.0 Scheduling
    ON TIME / DEADLINES
    Some things took a little longer than estimated.
  • 4.0 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer

Mobile App Dev for Street Parking Finder

“In addition to their technical expertise, Mentalstack is also very flexible and easy to work with.”

Quality: 
4.5
Schedule: 
4.5
Cost: 
5.0
Willing to refer: 
5.0
The Project
 
$10,000 to $49,999
 
Mar. 2018 - Ongoing
Project summary: 

Mentalstack developed an app for iOS and Android from scratch, incorporating mapping features that communicate with an internal API system. They provide ongoing development and support as needed.

The Reviewer
 
1-10 Employees
 
Austin, Texas
CTO, Street Parking Finder
 
Verified
The Review
Feedback summary: 

Mentalstack developed a high quality mobile app that's been well received by users. They continue to provide optimal customer support and fix any bugs quickly, while remaining flexible to client needs. 

A Clutch analyst personally interviewed this client over the phone. Below is an edited transcript.

BACKGROUND

Introduce your business and what you do there.

I'm the CEO of a company that has developed an app that helps people find street parking.

OPPORTUNITY / CHALLENGE

What challenge were you trying to address with Mentalstack?

We needed to find an app developer to help us build our mobile platform for both iOS and Android.

SOLUTION

What was the scope of their involvement?

Mentalstack designed and developed an app for both iOS and Android from scratch, based on the specifications and requirements we provided. They also provided testing and worked with us closely throughout development, so we could make changes and adjust features as we progressed. They incorporated mapping components that communicate to our API and populate specific information on the map, so users can find available street parking.

What is the team composition?

We work directly with a developer and a project manager.

How did you come to work with Mentalstack?

We posted the project on a couple different online forums and jobs boards and interviewed a few vendors that reached out to us. Mentalstack seemed like the best fit because they offered competitive pricing and could develop the app for both iOS and Android.

How much have you invested with them?

We've invested $10,000–$15,000 thus far.

What is the status of this engagement?

We started working together in March 2018 and they're still working on additional features in the app for us.

RESULTS & FEEDBACK

What evidence can you share that demonstrates the impact of the engagement?

Not only did Mentalstack finish development on time, but they also provided high-quality work that's been well received by our users. They've been good about fixing any bugs quickly as they pop up as well.

How did Mentalstack perform from a project management standpoint?

We typically have a meeting over the phone with them every morning and manage project tasks through Trello. They've been able to meet our tight deadlines, so we're very happy overall.

What did you find most impressive about them?

In addition to their technical expertise, Mentalstack is also very flexible and easy to work with.

Do you have any advice for potential customers?

I would only recommend asking them about their holiday schedules before setting up a timeline since they're located in Russia and often take longer holidays than in the US.

5.0
Overall Score
  • 4.5 Scheduling
    ON TIME / DEADLINES
  • 5.0 Cost
    Value / within estimates
  • 4.5 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer