FiveDotTwelve is an app development company focusing on close cooperation with clients and on individual approach to every project. We are passionate about delivering the highest quality products to our clients. We work hard to understand your business needs and then rapidly develop and implement fit-for-purpose solutions.
We remain committed to you and your vision throughout your project (and beyond) and internally are committed to always staying ahead of the curve in terms of the latest innovations that enable us to help you better.
| 125+ finely-tuned projects delivered | 90% of our clients come back with new challenges and tasks | 70% of our clients came to us by recommendation | 10+ years on the market |
Services (full-cycle product development):
Product design workshops
UI/UX design
Cross-platform mobile app development
Native app development
Web development
IoT development
QA testing
Maintenance and support
Technology expertise
Mobile apps: Flutter, Kotlin, Swift, React Native, FlutterFlow
Web apps: Node.js, React.js, Ruby On Rails, GraphQL, ElasticSearch
Cloud solutions: Docker, Kubernetes, Bitrise
Product design: Figma, Sketch, XD, FlowMapp
Testing: manual, automated, using Quick, Nimble, Espresso, Mocha, Chai, Rspec, Capybara and more
Experience in various industries
Fitness, Social Network, Health, eCommerce
Food, Business services, AR/VR, Utilities
Agrotech, Productivity, Education, Insurance
Check more at www.fivedottwelve.com
Min project size
$25,000+
Hourly rate
$50 - $99 / hr
Employees
10 - 49
Locations
Łódź, Poland
Year founded
Founded 2015
1 Locations
Łódź , Poland
No have been added yet...
Pricing Snapshot
Min. project size
$25,000+
Avg. hourly rate
$50 - $99
/hr
Rating for cost
4.7
/5
What Clients Have Said
FiveDotTwelve offers competitive pricing, with project costs ranging from $4,000 to over $260,000 depending on project scope. Clients consistently report good value for cost, effective communication, and timely delivery, indicating a strong return on investment across diverse projects.
Clients highlight FiveDotTwelve’s proficiency in mobile app development. They handle projects from concept to launch, utilizing technologies like Flutter to create robust iOS and Android apps. Their technical skills are frequently commended.
Impressive Technical and Design Skills
Clients commend FiveDotTwelve for their technical and design skills. They deliver visually appealing and functional products, often suggesting enhancements that improve user experience and app functionality.
Supportive and Collaborative Team
The team at FiveDotTwelve is described as supportive and collaborative. They work closely with clients to refine project visions and deliver solutions that align with business goals, often going beyond contractual obligations.
Commitment to Long-Term Partnerships
FiveDotTwelve is committed to building long-term partnerships with clients. Their dedication to ongoing support and maintenance after project completion is highly valued, contributing to sustained client relationships.
Need for Improved Estimation Accuracy
While generally satisfied, some clients note that FiveDotTwelve could improve the accuracy of their project time and cost estimates. Addressing this could enhance client trust and project planning efficiency.
Responsive and Transparent Communication
Clients appreciate FiveDotTwelve’s responsiveness and transparency. They maintain open lines of communication, making themselves available for queries and updates, which fosters strong client relationships.
Mobile App Development for Digital Product Development Co
Mobile App Development
Confidential
Aug. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"FiveDotTwelve is always available over Slack."
Feb 24, 2026
CEO, higroup
Dino Starcic
Information technology
Slovenia
11-50 Employees
Online Review
FiveDotTwelve provides ongoing Flutter and FlutterFlow development support for a digital product development partner. The team has worked on a business platform mobile app.
FiveDotTwelve has good communication regarding deliverables and risks. The team is always available on Slack. FiveDotTwelve is swift and precise and delivers on their promises. The client also praised the developer assigned to their project.
BACKGROUND
Introduce your business and what you do there.
I’m the CEO of higroup, a digital product development partner specializing in complex software solutions. We offer product discovery, UI/UX design, engineering, mobile development, and DevOps for startups and enterprises across industries like SaaS, legal tech, telco, and sustainability.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with FiveDotTwelve?
We needed help with our Flutter and FlutterFlow development needs.
SOLUTION
What was the scope of their involvement?
FiveDotTwelve provides us with ongoing outstaffing of Flutter and FlutterFlow capabilities. The team has worked on a business platform mobile app.
What is the team composition?
We work with one teammate from FiveDotTwelve.
How did you come to work with FiveDotTwelve?
I found Marcin on Upwork. We chose FiveDotTwelve over other options because they had high ratings, their pricing fit our budget, and their company values aligned with ours.
What is the status of this engagement?
We started working together in August 2025, and the engagement is ongoing.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
FiveDotTwelve has good communication regarding deliverables and risks.
How did FiveDotTwelve perform from a project management standpoint?
FiveDotTwelve is always available over Slack. The team is swift and precise and delivers on their promises.
What did you find most impressive about them?
Marcin is a great guy.
Are there any areas they could improve?
There's nothing they need to improve at the moment.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Website Development & Graphic Design for Office Building
Graphic DesignMarket ResearchWeb Development
Confidential
Sep. - Oct. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
The agreed project scope and schedule were met 100%."
May 14, 2025
Manager, Drukarnia Center
Olga Stawiszyńska-Jakubowicz
Verified
Business services
Lodz, Poland
1-10 Employees
Online Review
Verified
FiveDotTwelve provided website development services for an office building. The team created a new website that presented the client's business and included graphic designs and training on how to use the site.
FiveDotTwelve's work received positive reviews from the client's internal team. The site also saw an increase in traffic and time spent by visitors. The team conducted the project in a clear manner and met the agreed-upon scope and schedule. Their expertise and valuable workshops set them apart.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Manager of Drukarnia Center
Describe what your company does in a single sentence.
We are a modern office building located in the city center.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire FiveDotTwelve to accomplish?
Our main goal was to create a new website for our office building that would clearly and transparently present the building itself, our offer and additional activities.
SOLUTION
How did you find FiveDotTwelve?
Referral
Why did you select FiveDotTwelve over others?
Other
How many teammates from FiveDotTwelve were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
As a result of the cooperation, we received a report summarizing the conducted workshops we participated in, a finished graphic design and a website along with training in its use.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The new site is receiving positive reviews, we are seeing increasing traffic to the site and a significant improvement in the time spent by visitors.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The project was conducted in a clear and understandable manner, and the agreed project scope and schedule were met 100%.
What was your primary form of communication with FiveDotTwelve?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
the greatest value for us was the project workshop during which we could look at our brand, compare it with the competition, discuss our potential clients and discuss the functionalities of the new website with experienced specialists who also advised us at every step.
Are there any areas for improvement or something FiveDotTwelve could have done differently?
none
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App Development for Applications Company
Application TestingCustom Software DevelopmentMobile App Development
$10,000 to $49,999
May - Aug. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0
"Their developers are of the highest level."
May 2, 2025
COO, Mustard
Luke Collis
Verified
Sports
Philadelphia, Pennsylvania
1-10 Employees
Online Review
Verified
FiveDotTwelve provided mobile app development for a computer-vision-based applications company. The team handled research and development to bring the client's computer-vision-based technology to the iPhone.
FiveDotTwelve successfully transferred the client's computer vision to the device in a testing environment. The team delivered excellent work on time and communicated clearly through virtual meetings. The client was impressed with the team's expertise and high-level developers.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the COO of Mustard
Describe what your company does in a single sentence.
We build computer-vision based applications to provide users the best coaching in the world, personalized to them
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire FiveDotTwelve to accomplish?
Bring our cloud-based computer vision onto device
SOLUTION
How did you find FiveDotTwelve?
Referral
Why did you select FiveDotTwelve over others?
High ratings
Pricing fit our budget
Good value for cost
Referred to me
How many teammates from FiveDotTwelve were assigned to this project?
1 Employee
Describe the scope of work in detail. Please include a summary of key deliverables.
We wanted to bring our computer-vision based technology to the iPhone. We weren't even totally sure of feasability. This was a big research project in addition to a development project.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
We were able to move our computer vision onto device in a testing environment
Describe their project management. Did they deliver items on time? How did they respond to your needs?
There were clear lines of communication and items were delivered on time. If there were any issues, they were communicated clearly ahead of time.
What was your primary form of communication with FiveDotTwelve?
Virtual Meeting
What did you find most impressive or unique about this company?
Expertise. Their developers are of the highest level. I value their opinions.
Are there any areas for improvement or something FiveDotTwelve could have done differently?
All of their work so far has been excellent.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.5
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App Development for SaaS Company
Mobile App Development
$50,000 to $199,999
Jan. 2023 - Jan. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"We were very happy with their service and delivered work."
Feb 1, 2024
Product Owner, Evresys
Kim Stukje
Verified
Other industries
Zeist, Netherlands
11-50 Employees
Online Review
Verified
FiveDotTwelve helped a SaaS company develop their mobile app. The team was mainly in charge of building the admin panel and implementing chat and push-to-talk (PTT) functionalities.
The client was delighted with the resulting app. FiveDotTwelve managed the project efficiently — they always adhered to deadlines and responded to queries and feedback promptly. The team impressed the client with their ability to come up with innovative solutions quickly.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Product Owner of Evresys
Describe what your company does in a single sentence.
SAAS
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire FiveDotTwelve to accomplish?
Create new app features
SOLUTION
How did you find FiveDotTwelve?
Referral
Why did you select FiveDotTwelve over others?
High ratings
How many teammates from FiveDotTwelve were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Development of our own Evresys App
PTT Functionality for app and admin panel
Chat functionality for app and admin panel
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Use of the app in our field of work
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Delivery is always on time, within the estimated time. Always quick respons/feedback to our questions/needs
What was your primary form of communication with FiveDotTwelve?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
Quick solutions and also some additional ideas to controbute to a better product and/or service
Are there any areas for improvement or something FiveDotTwelve could have done differently?
We were very happy with their service and delivered work.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Staff Aug & Software Dev for Software Dev Outsourcing Firm
Custom Software DevelopmentIT Staff Augmentation
Confidential
June - July 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"The developer was committed to work and quickly found his place in the team."
Sep 17, 2023
CEO, Appotype
Mateusz Chechliński
Verified
Other industries
Warsaw, Poland
1-10 Employees
Online Review
Verified
FiveDotTwelve deployed a Flutter developer to help a software development outsourcing firm build a health app for their end client. The developer implemented new features and worked on other assigned tasks.
FiveDotTwelve completed their tasks on time and according to the client's requirements. The developer impressed the client with their programming skills, cooperation, commitment to work, and ability to integrate with the firm's internal team. They also communicated via email and online meetings.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CEO of Appotype
Describe what your company does in a single sentence.
We are an outsourcing company that creates applications mainly for the healthcare industry.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire FiveDotTwelve to accomplish?
We wanted to expand our Flutter team with an experienced developer to speed up the app development process.
SOLUTION
How did you find FiveDotTwelve?
Network
Why did you select FiveDotTwelve over others?
High ratings
Great culture fit
Good value for cost
Company values aligned
How many teammates from FiveDotTwelve were assigned to this project?
1 Employee
Describe the scope of work in detail. Please include a summary of key deliverables.
We were looking for support in the development of a health application for our client. An experienced Flutter developer from FiveDotTwelve who joined our team completed his tasks efficiently and implemented new features. His work was done with high quality and on time.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Flutter developer from FiveDotTwelve, who joined our team, completed all his tasks and, as a result, created new features in the application.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Everything was delivered on time and in accordance with our needs.
What was your primary form of communication with FiveDotTwelve?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
The developer was committed to work and quickly found his place in the team. He has good communication and programming skills. Our cooperation went very smoothly.
Are there any areas for improvement or something FiveDotTwelve could have done differently?
Not at this point.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Web & Mobile App Dev for Club Promotion Company
Mobile App DevelopmentWeb DesignWeb Development
$10,000 to $49,999
Jan. 2018 - Ongoing
5.0
Quality
5.0
Schedule
4.5
Cost
4.0
Willing to Refer
5.0
"The experience they had exceeded our expectations."
Feb 20, 2023
Owner, Wejściówka
Michał Grabarz
Verified
Advertising & marketing
Poland
1-10 Employees
Online Review
Verified
FiveDotTwelve designed and developed a club promotion company's web app and mobile app for iOS and Android. They based the design on the client's previously prepared concept for the project.
FiveDotTwelve delivered a growing, fully functional mobile and web app. Their team perfectly understood the project's concept, enabling them to adapt the work methodology most suited for it. Moreover, they impressed the client with their commitment to the project, efficient workflow, and updates.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I'm owner of small project called "Wejściówka". Our purpose is to promote music clubs events
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire FiveDotTwelve?
FiveDotTwelve handled the design and implementation of the previously prepared concept in the project. They created for Us a mobile application for IOS and android operating systems, as well as an entire web application.
SOLUTION
How did you select this vendor?
FiveDotTwelve was recommended to us by a satisfied friend who also used their services. After initial discussions, we were convinced that they were the company we were looking for.
Describe the scope of their work in detail.
FiveDotTwelve perfectly understood the project concept and adapted the work methodology to best fit the project. Every two weeks, we held discussions in which I learned what had been done and what stage the project was currently at.
What was the team composition?
Team FiveDotTwelve had all the required people. From fronted and backend developers to designers and testers.
RESULTS & FEEDBACK
Can you share any outcomes from the project that demonstrate progress or success?
The result of the collaboration is an ever-operating and growing mobile application and web application.
How effective was the workflow between your team and theirs?
We rate the workflow as efficient.
What did you find most impressive about this company?
Most surprising was the commitment with which the company approached us. In addition, the experience they had exceeded our expectations.
Is there any area for improvement or anything that could have been done differently?
I think that the current form is correct and does not require significant improvements.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
4.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobile Application for Smart Grid Solution Company
Mobile App Development
$10,000 to $49,999
Nov. 2021 - June 2022
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"We were regularly informed about the progress in a professional manner."
Oct 7, 2022
Head of Department, Atende Industries
Dominik Bochenski
Verified
Other industries
Warsaw, Poland
51-200 Employees
Online Review
Verified
FiveDotTwelve built a mobile app for a smart grid solution company. They created user interface mock-ups, scheduled project meetings, and looked after the quality of each piece of software independently.
FiveDotTwelve’s deliverables met the client’s needs and expectations. The work was of high quality and the team performed well during the project. The process was agile and smooth, and both parties communicated effectively via Slack, Jira, and Confluence.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
I am the head of Smart Grid Solution Department.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire FiveDotTwelve, and what were your goals?
We wanted to develop a mobile application for our client that enables energy meters managing. Our goal was to deliver user-friendly and failure-free app.
SOLUTION
How did you select this vendor and what were the deciding factors?
FDT was recommended by our reliable business partner.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
FDT reliably developed mock-ups of the user interface, organized project meetings and took care of the quality of the software on its own. We were regularly informed about the progress in a professional manner.
How many resources from the vendor's team worked with you, and what were their positions?
We cooperated with a team of programmers, a developer and a user interface designer.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
The results of the project were in line with expectations and performed within the assumed time, without delays and without any misunderstandings.
Describe their project management style, including communication tools and timeliness.
The project was carried out in an agile manner and adapted to our availability (adjusting the dates of meetings and the form of communication).
What did you find most impressive or unique about this company?
The team used popular tools like slack, jira, confluence.
Are there any areas for improvement or something they could have done differently?
It is difficult to indicate any places for improvement.
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