Mobile Apps Development: Swift, Kotlin, Flutter

Agile methodology

After each stage we evaluate a product and immediately make changes if necessary. It makes mobile app development efficient and the results are more satisfying.

QA tests

Every time we make changes, we check if all the features work properly. This lets us quickly find errors and constantly refine products.

DISTRIBUTION

We always make sure our apps meet the requirements set by App Store and Google Play, so the publishing process can go smoothly.

UX Design

Intuitive navigation architecture and native gestures people are used to are important elements of our apps. They help us ensure a better experience.

PRODUCT Maintenance

Our code is clear. This makes editing easier, so software developers can quickly add new features and fix potential bugs.

Safety

In product versions of our apps we never log data to user console. We also obfuscate code in order to hide data from the third parties.

What do we specialize in?

Native apps

Cross-platform apps

Build your app with us!

– average developer’s experience: 5 years
– 8 years in the market
– over 30 clients
– over 60 apps.

Contact us

What can we do for you?

Native iOS and Android apps

We specialize in the development of apps that are dedicated to iOS and Android platforms. To achieve desirable results, we use Swift and Kotlin. Our native mobile apps guarantee smooth performance even when they rely on many system components. We customize gestures and navigation elements, so they are adjusted to either iOS or Android standards. It all makes using the app comfortable and people are more eager to discover its possibilities.

Cross-platform apps

Our universal, cross-platform apps guarantee high performance on mobile devices, regardless of the platform – Android or iOS. They are a good choice especially when the budget is limited and there is not much time for the development. We build cross-platform apps with Flutter technology.

Not sure what kind of app should you choose?

Take part in our Product Design workshops and find out what solutions are recommended in your case.

Ask about details

Our projects

android

trans.INFO

Native Android app for trans.INFO,
a popular website and forum about transport and logistics with over 40 000 articles. It’s visited by 1.5 mln readers every month. trans.INFO app provides its users with the latest news on logistics, delivery chain and transport.

Find out more

android / ios

DLL Ebook

Educational app for Direct Language Lab – Polish publishing house that specializes in coursebooks for learning foreign languages based on direct method. Students in over 30 countries use DD Lab publications in language schools.

Find out more

android / ios

forBET

Native app for one of the leading bookmakers in Poland. With forBET users can make bets anytime and anywhere. They also can stay up to date with current promotions and upcoming events.

Find out more

android / ios

Answear

M-commerce app for online fashion retailer with more than 80 000 clothes, shoes and accessories from over 300 brands, including Adidas, Nike, Tommy Hilfiger, DNKY and Valentino.

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android / ios

Sprzedajemy.pl

Native Android and iOS apps for a free online marketplace where users sell and buy services and goods. Sprzedajemy.pl is dedicated mostly to individual sellers. It’s integrated with Facebook to let users verify each other’s credibility.

Find out more

Testimonials

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. (…) Holdapp’s efforts have increased orders. The project management is excellent. Their team was communicative and well-organized.
Paweł Salamucha Head of Web & Mobile Development, ANSWEAR

The final app has had a positive impact on the company’s turnover, and customer volume has increased. Professional and adaptable, Holdapp works in sprints to meet deadlines. They’re able to keep up with the platform’s fast-paced expansion.
Marcin Jamiołkowski Head of IT, forBET Zakłady Bukmacherskie Sp z o.o.

The final app has had a positive impact on the company’s turnover, and customer volume has increased. Professional and adaptable, Holdapp works in sprints to meet deadlines. They’re able to keep up with the platform’s fast-paced expansion.
Tomasz Filipiuk Co-Owner, Direct Language Lab

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. (…) 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.
Piotr Trybala Board member, Sprzedajemy.pl

HoldApp took over full mobile iPhone development of the TrackingDays App when our previous developer team let us down and could not complete the project re-build for TrackingDays 2.0. (…) HoldApp have delivered a greatly improved, stable and successfully updated App. They have managed a very tricky migration from an entirely different platform, moving from TrackingDays 1.0 to 2.0.
Founder, TrackingDays.com

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