App-Entwicklung: Flutter Development

FlutterDevelopment

Flutter by Google enables pixel-perfect apps for iOS and Android from a single codebase – with its own rendering engine that is independent of native platform widgets. The result: visually consistent apps that look identical on old and new devices, start quickly, and feel native. We build Flutter apps from architecture to store release.

Challenges you'll recognise

  • Your app looks different across Android versions – pixel deviations and layout errors pile up with every OS update.
  • You want a visually demanding app that looks identical on iOS and Android without maintaining two codebases.
  • Your team is looking for a cross-platform framework that truly delivers native performance instead of feeling like a dressed-up web app.

Own Rendering Engine

Flutter renders all UI elements in its own engine (Skia / Impeller), independent of native iOS or Android components. That means the app looks exactly the same on every device and OS version. Platform-specific UI bugs that surface with a new Android update become a thing of the past.

Dart as the Language

Flutter uses Dart – a concise, strongly typed language that developers with Java, Kotlin, or Swift experience can pick up quickly. Dart compiles to native ARM code, giving Flutter apps a performance profile close to true native.

Widget System

Everything in Flutter is a widget. This design decision makes layouts extremely flexible yet highly predictable. We build clean widget hierarchies that stay maintainable and apply state management patterns that keep the app manageable as complexity grows.

Platform Extensions

Where Flutter has no ready-made solution, we write platform channels – native iOS and Android implementations that are called seamlessly from Flutter. Camera pipelines, Bluetooth integrations, or device-specific sensors are accessible without giving up cross-platform benefits.

Good to know

  • Pixel-Perfect UIs

    Because Flutter uses its own rendering engine, the app looks exactly the same on every device and OS version – with no platform-specific UI deviations that resurface with each new Android or iOS release.

  • Hot Reload

    Flutter's hot reload shows code changes in real time in the running emulator or device – without restarting the app. This significantly accelerates UI development and debugging.

  • Native Compilation

    Flutter apps compile to native ARM code rather than being interpreted. This delivers fast app startup and smooth animations, even on older or lower-powered devices.

Frequently asked questions

Is Flutter suitable for production-critical apps?
Yes. Flutter is used in production by Google and many large companies and is mature. The package ecosystem grows continuously, and Google actively invests in the platform.
How does Flutter compare to React Native in performance?
Both frameworks deliver comparable performance for most apps. Flutter has an advantage in animation-heavy and visually complex apps through its own rendering engine – with no dependency on the native UI thread.
Can Flutter also be used for desktop or web apps?
Yes. Flutter officially supports web, Windows, macOS, and Linux alongside iOS and Android. The ecosystem for web and desktop targets is less mature than for mobile, but can be a sensible option when maximising codebase reuse.

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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.

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

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