Logo von nextlevels
Hey!

App-Entwicklung: React Native App Development

React Native
App Development

React Native combines the best of both worlds: a shared codebase and real native UI components. The result are apps that feel native on iOS and Android, are faster to build and cheaper to maintain than two separate native projects. We develop React Native apps from architecture to store release – with a focus on performance, clean TypeScript code and long-term maintainability.

Challenges you'll recognise

  • You need iOS and Android but have neither the budget nor the team for two separate native developments.
  • Your existing hybrid app feels like a website in an app shell – users complain about stuttering lists and unnatural interaction.
  • You want to ship features quickly, but every release means double the effort for two separate codebases.

Native UI with JavaScript

React Native drives real native components instead of a WebView – buttons, lists and animations behave exactly as iOS and Android users expect. Your team writes the logic once in TypeScript and the result feels like a native app on both platforms. This avoids the 'feels like a website' effect of many hybrid solutions.

One codebase, two platforms

With React Native you maintain iOS and Android from a single repository. Features, bug fixes and design changes land on both platforms at the same time – without double the effort and without one platform permanently lagging behind. We cleanly encapsulate platform-specific adjustments where they are genuinely needed.

Illustration zu Native UI with JavaScript und One codebase, two platforms

Access to native features

Camera, GPS, push notifications, biometric authentication, Bluetooth or in-app purchases are all accessible through the mature React Native ecosystem. Where a specific hardware feature has no ready-made package, we write a custom native module and integrate it seamlessly into the app – you don't have to do without anything.

Performance optimization

React Native is fast when you know what matters. We optimize render cycles, avoid unnecessary bridge calls, rely on efficient state management and lazy-load heavy screens. Profiling on real devices – not just emulators – ensures lists scroll smoothly and the app stays responsive even on older hardware.

Illustration zu Access to native features und Performance optimization

Good to know

  • Real native components

    React Native does not render a WebView but drives real native UI elements. As a result the app behaves like a native app for scrolling, gestures and animations – a key difference from pure WebView hybrid approaches.

  • TypeScript as the foundation

    We build React Native apps consistently in TypeScript. Static typing catches errors early, keeps the code readable for follow-up teams and significantly reduces regressions during further development.

  • Over-the-air updates

    A major practical advantage: many JavaScript changes can be shipped directly to devices without a renewed store review. Critical fixes therefore reach users considerably faster.

Your benefits

  • Native look and feel on iOS and Android
  • One TypeScript codebase instead of two separate native projects
  • Faster development and lower maintenance costs
  • Full access to native device features via the React Native ecosystem
  • Over-the-air updates for critical fixes without a store review
  • Maintainable, type-safe architecture without vendor lock-in
Why nextlevels

Success you can measure

With us you're always one step ahead technologically and tap directly into our extensive app development expertise. We take a close look at your app idea, identify key success factors and create tailor-made applications. Your visions and goals are at the heart of our joint project work.

  1. Expert knowledge in app technologies

    React Native, Flutter, native iOS and Android — we pick the stack to fit your project, not our preference.

  2. Comprehensive user experience know-how

    Intuitive operation and seamless interactions decide ratings and how long users stay in the app.

  3. Proven track record

    Published apps in the App Store and Play Store — from MVP to mature platform.

  4. Versatile team

    Concept, design, development and backend from one hand — no friction at the interfaces.

  5. Long-term partnerships

    We stay after launch and keep evolving your app with maintenance and updates.

Is this right for you?

These points help you gauge whether this service fits your situation.

  • You want to serve iOS and Android, but with one team and one budget instead of two.
  • Your team already knows React or JavaScript/TypeScript and should use that knowledge for the app too.
  • Your existing hybrid or WebView app doesn't feel native enough and users drop off.
  • You want to ship new features on both platforms in parallel without double the development effort.
  • You value a maintainable, future-proof codebase without vendor lock-in.

Frequently asked questions

What is the difference between React Native and Flutter?
Both are mature cross-platform frameworks. React Native uses real native UI components and JavaScript/TypeScript – ideal when your team already comes from the React world or when web and app should share common logic. Flutter renders the UI in its own engine and delivers maximum visual consistency. We recommend the framework based on your requirements, not on preference.
Is a React Native app as fast as a native app?
For the vast majority of apps – business apps, marketplaces, social networks, content apps – the performance difference is not noticeable to users when the app is built cleanly. For extremely graphics-intensive applications such as elaborate 3D games or compute-heavy real-time processing, native development can have advantages. We clarify that honestly upfront.
Can I migrate an existing native app to React Native?
Yes, often step by step. React Native can be integrated into an existing native app, so individual screens can be migrated gradually instead of rebuilding everything at once. We analyze your existing app and develop a migration strategy that minimizes risk and effort.
Do large companies use React Native?
Yes. React Native is used in production by numerous well-known apps and is actively developed by Meta and a large open-source community. That means long-term maintenance, a stable ecosystem and a large talent pool – an important factor for the future-proofing of your app.
Do you also handle publishing to the app stores?
Yes. We handle publishing to the Apple App Store and Google Play Store including store listing, review process and technical requirements. The developer accounts run under your name so you always keep full sovereignty over your app.

Related articles from our blog

READY FOR YOUR APP THAT SETS NEW STANDARDS?

Whether you want to optimize an existing app or bring a new vision to life – we'd love to meet you. A no-obligation conversation is always a great start.

Profile picture of Paul Kalisch, Executive Partner
Paul Kalisch
Executive Partner