IoT Development Company

FiveDotTwelve

Polish app developer specialising in Flutter and FlutterFlow mobile apps, with web and IoT work

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About FiveDotTwelve

Working from Poland, FiveDotTwelve builds apps across the full development cycle, with its main specialism in Flutter and FlutterFlow. The firm says it has worked on more than 100 app projects and holds a portfolio of more than 50 case studies, mostly built for startups, scale-ups and enterprises.

Flutter and FlutterFlow apps from idea to release

A client can bring an idea and have FiveDotTwelve guide it through the full development cycle, with a team of UI and UX designers, Flutter and FlutterFlow developers, quality assurance testers and project managers. The firm also takes on work that extends an existing product team, adding developers to a client's own staff.

Native, web and cross-platform development

The firm also builds native iOS and Android applications in Swift and Kotlin, web applications using Node.js, React and Ruby on Rails, and cross-platform apps in Flutter and React Native. Its services cover the whole process, from product strategy and ideation through to design and quality checks.

Connected devices and cloud-based apps

A large share of the work involves IoT, meaning apps that run connected devices, alongside cloud-based application development. Its designs are checked by a dedicated quality assurance team before release.

Recent products in fitness and document signing

Among the products the firm lists is Squaddy, a fitness app for creating and sharing workouts and training content, chatting with teammates and clients, and organising online or in-person sessions. VRWorkout pairs with Oculus headsets to deliver a home fitness routine in virtual reality. Autenti is a platform for signing legally binding documents online on any device with internet access, and SimSim Recipes is also among its clients.

Ratings and repeat work

The firm cites a rating of 4.9 out of 5 on the Clutch review directory. It says many of its clients return with new challenges and that a good share of its work comes through recommendations. It has been on the market for several years.

TrustList summary

FiveDotTwelve is a full-cycle app development company in Poland whose main specialism is Flutter and FlutterFlow. It can build an app from scratch with its own designers, developers, testers and project managers, or add people to a client's team to extend an existing product.

What FiveDotTwelve does

Flutter and FlutterFlow apps: cross-platform mobile apps from idea to release.
Native mobile apps: iOS in Swift and Android in Kotlin, plus React Native.
Web apps: builds in Node.js, React and Ruby on Rails.
IoT and cloud apps: connected-device and cloud-based applications.
Design and QA: UI/UX design with a dedicated testing team.
Team extension: developers joining a client's own staff.

Clients

The firm works with startups, scale-ups and enterprises. Examples include Squaddy, a fitness app for sharing workouts; VRWorkout, a home fitness app for Oculus headsets; Autenti, for signing documents online; and SimSim Recipes.

Key facts

Based in: Poland
Portfolio: more than 50 case studies and over 100 app projects
Main technology: Flutter and FlutterFlow

Summary written by TrustList from the business's own published information, Nov 2026.

Categories & features

FiveDotTwelve rankings

FiveDotTwelve is ranked on 3 TrustList rankings: #1 on 1, #3 on 1 and #7 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. FiveDotTwelve has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Iot development company · 3 rankings

On 2 of these it sits behind Liki Mobile Solutions, ahead of Cardinal Peak.

#1of 21
Internet
It is the only one of the 21 here listing arts, entertainment & music and python.
Its profile: “Autenti is a platform for signing legally binding documents online on any device with internet access, and SimSim Recipes is also among its clients.”
Of the 21 here, 20 also cover IoT and 10 also cover cloud; 3 also work in Nice and 3 also work in Fleet.
Behind BiiLabs, ahead of App Monkey.
#3of 31
Design
It is the only one of the 31 here listing RubyonRails and swift.
Its profile: “Its services cover the whole process, from product strategy and ideation through to design and quality checks.”
Of the 31 here, 15 also cover android and 13 also cover mobile app development; 3 also work in Asia and 2 also work in Mumbai.
#7of 63
It
It is the only one of the top 58 here listing ideation and one of 2 here listing rating.
Its profile: “The firm says it has worked on more than 100 app projects and holds a portfolio of more than 50 case studies, mostly built for startups, scale-ups and enterprises.”
Of the top 58 here, 18 also cover web development and 17 also cover iOS app; 3 also work in Bengaluru, India and 2 also work in Africa.