Flutter vs React Native for Your App MVP: How We Decide

"Flutter or React Native?" is one of the first questions founders ask when planning a mobile app. We build in both and have shipped apps with each to the App Store and Google Play, so here is how we actually decide.

The short answer: both are production-ready for most apps, and the framework is rarely what makes an MVP succeed or fail. Choose React Native if your team or your web product already lives in JavaScript or TypeScript and React. Choose Flutter if you want pixel-identical custom UI across platforms and do not have a JavaScript team to share code with. Either way, plan for native code wherever the app touches hardware closely.

What is actually different

• Language. React Native uses JavaScript or TypeScript with React. Flutter uses Dart.
• How the UI is drawn. React Native renders the platform's native components. Flutter draws its own widgets with its rendering engine, so the UI looks the same on every device.
• Ecosystem. React Native shares tools, libraries and developers with React on the web. Flutter has a strong, curated package ecosystem of its own.
• Native access. Both can call native iOS and Android code: native modules in React Native, platform channels in Flutter.

For a typical MVP (accounts, feeds, forms, payments, push notifications), both are fast to build with and perform well. The differences that matter come from your team, your design and your hardest feature.

How we decide on real projects

AVA: React Native, for a design-heavy social app on Firebase

AVA is a full social network: feed, stories, explore, real-time group and direct messaging, a memories archive and a private vault protected by PIN or biometrics. It needed a distinctive premium look in both dark and light modes.

We built it in React Native with Firebase for real-time data, authentication, push notifications and media storage, and implemented a custom design system ("AVA Liquid Glass") applied consistently across all 31 screens. React Native's maturity for this kind of app and the Firebase ecosystem made it a natural fit, and the app shipped to both platforms.

MedLingo: Flutter, for a polished learning app with its own algorithm

MedLingo teaches medical terminology through a Duolingo-style experience: a learning path with prerequisite locking, flashcards with three definition levels, quizzes with drag-and-drop questions, a daily review hub and a global leaderboard.

We built it in Flutter with Supabase, implemented the SM-2 spaced repetition algorithm from scratch in Dart, and kept all curriculum content in the database, so new terms ship without an app update. It launched on both stores at the same time.

AnyMusic and Musica Medica: Flutter plus native code, for millisecond timing

These two apps let people feel music through their phone's vibration motor, which is a timing problem, not a UI problem. Audio and haptics run on different clocks, and Android motors and the iPhone Taptic Engine behave very differently.

• AnyMusic is a Flutter app with a custom haptic engine that polls audio position every 16 ms and fires pre-computed vibration events, while a Python cloud function analyzes each uploaded track to generate its haptic pattern.
• Musica Medica keeps its Flutter architecture but drops to native code where it counts: Android's SoundPool and VibrationEffect, and iOS Core Haptics with an AV audio pipeline, exposed to Flutter through platform channels. Measured audio-to-haptics sync is under 50 ms, with per-device calibration.

The lesson from both: for hardware-sensitive features, the framework choice matters less than being willing to write native code for the critical path.

A decision checklist

Lean towards React Native if:

• Your team writes JavaScript or TypeScript, or you will hire from the React pool.
• You have a React web app and want to share logic, types or developers with it.
• You want the app to feel like each platform's native UI.

Lean towards Flutter if:

• You want one custom design that looks identical on every device.
• Your team is new to mobile and does not have a JavaScript stack to share.
• You want a single, consistent toolchain owned by one vendor.

Either way, ask:

• What is the hardest feature? Real-time audio, camera, Bluetooth or heavy animation may need native code in both frameworks. Prototype that part first.
• Who maintains the app after launch? Choose the framework your future team can hire for.
• How will you charge? If the app sells digital content or subscriptions, store rules usually require in-app purchases. For Musica Medica we resolved this before launch rather than risk a rejection.

Key takeaways

• Both frameworks are production-ready; for most MVPs, team and product fit matter more than benchmarks.
• React Native fits teams and products already built on JavaScript and React.
• Flutter fits custom, consistent UI and teams starting fresh on mobile.
• Hardware-critical features need native code in either framework. Plan for it from day one.
• Decide monetization early: store payment rules can shape your launch more than your framework does.