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App developer in Rotterdam

Android, iOS, Hybrid and Web Apps

As your expert app developer in Rotterdam, we focus on designing and developing progressive apps that leave an unforgettable impression on your users. Our specialization lies in coming up with solutions that not only improve the user experience, but are also vital to the growth of your business.

We are here for every stage of your mobile project, from strategy, engineering to design and from Native to React Native or web app.

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Our work

Beautiful, Simple and Logical

Pixel-perfect design and the best techniques

With a proven track record as an app developer in Rotterdam, Brthrs stands out in conceptualizing, designing and implementing top-notch apps.

An effective app is defined by its high retention rates, strong user engagement and excellent user experience. That’s why we focus on developing apps in Rotterdam that perfectly fit your unique goals and target audience. Our multidisciplinary team in Rotterdam possesses extensive expertise in crafting both visually stunning and functionally advanced apps. We strive for a perfect balance between ease of use and technical superiority, ensuring that every app we develop guarantees an unparalleled user experience.

Native iOS & Android Apps

We develop high-quality native iOS app and Android apps, with all the advantages native offers: speed, great user-experience and pixel-perfect design.

iOS Development: Swift, Objective-C

Android Development: Kotlin, Java

Hybrid Apps

If you want your product or service to work on multiple systems, we can build you a hybrid app. This technology saves you time and money.

Hybrid Development: React Native, Firebase, Amazon AWS Amplify

Web Apps

A Web application is the ideal choice when you prefer a Web-based solution to developing a traditional mobile app. This approach allows you to reach a wider audience without the need for users to download or install anything. With a web app, you can effectively provide an app-like experience, optimized for all smartphones, while taking advantage of the benefits of web technologies.

Development: React and Vue.JS

Strategic thinking

The success of your app hinges on a good plan. Who are your users? What do you want to achieve? Our strategists will help you create a solid plan for an app that your target audience will want to keep using.

Sample Case Study: The Stopcoach App

Commissioned by the Trimbos Institute, Pharos and LUMC, we developed the Stopcoach App, which helps people quit smoking. By putting down a good strategy, designing a sleek design and conducting test sessions with the target audience, we designed an app that helped the target audience put down the cigarette.

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We are there for the whole process


Together we look at the market, your product and your target audience. We translate that into an effective strategy that helps your product grow.


Our team of designers provides the best UI and UX strategy. So that the button is not only very beautiful, but also always in the right place. They don't shy away from illustrations and animations either.


This is where we turn design into reality. We use the latest technologies and work in sprints, so you end up with an app that exceeds the needs of your users.


Then it's time to grow. We monitor, analyze, A/B test and make sure your app is also easily findable in the app stores (app marketing).

How we develop apps

Step 1: Research & Strategy

Before we get started, we want to get clear on what is important. What goals do you have, what are you unique in, who are your users and who are your competitors? Together we will create a marketing strategy for your app.

Step 2: Concept & Interaction Design

Step 3: User Interface design

Step 4: Content

Our content specialist will engage with you early in the process to work on appropriate content. Together we create a unique app, with content that matches your goals.

Step 5: Technical design

Step 6: App development

After the technical design, we will start developing the app in sprints. Our team of programmers, content specialists and designers work closely together on this.

Step 7: Testing

We want to deliver products that make you and your users happy. That's why we test all our apps extensively. Himself, but certainly also with the target audience.

Step 8: Release

Once all previous steps have been successfully completed, we will make sure the app becomes available in your chosen app stores.

We already created apps for these brands

Knowledge base apps

Want to know more about apps? Take a look at our knowledge base, who knows, maybe we can answer your question. Of course, you can also call or WhatsAppen us!

Ask us your question
Foto van Robert Keus met roze achtergrond


Want to know more?

This is Robert, director of Brthrs. Do you have a question, a challenge, an idea … Robert and the Brthrs team would love to hear from you!

WhatsApp us
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