"Which one should we use?" is the first question in almost every mobile kickoff call. The honest answer is: it depends on your team, your timeline, and how deep you'll need to go into native platform features. Here's the framework we actually use to decide.
Start with your team, not the framework
Framework choice is a people decision before it's a technical one. If your team already knows React and your web app is built with it, React Native lets you share patterns, sometimes libraries, and definitely mental models across web and mobile. If your team is starting fresh or comes from a design-heavy background, Flutter's single rendering engine and widget-first approach tends to click faster.
Where React Native wins
- Code sharing with an existing React web app. Business logic, state management, and API layers often port over with light changes.
- Hiring pool. JavaScript/TypeScript developers are easier to find and ramp up than Dart developers in most markets.
- Native module ecosystem. For apps that lean heavily on mature third-party SDKs (payments, maps, analytics), React Native's bridge ecosystem is deep and well-documented.
Where Flutter wins
- Pixel-perfect, highly custom UI. Flutter renders its own widgets rather than mapping to native ones, so a complex animation looks identical on iOS and Android without platform-specific tweaks.
- Performance-sensitive interactions. Because Flutter compiles to native ARM code and controls its own rendering pipeline, it tends to stay smoother under heavy animation or list-scrolling load.
- Long-term consistency. Fewer "it looks different on Android" surprises, which matters a lot for design-led products.
We've shipped production apps in both. The frameworks aren't the risk — an unclear product spec or a rushed native-integration estimate is what actually derails mobile timelines.
A few questions we ask before recommending either
- Does this app need deep integration with a specific native SDK that only has first-class support on one platform?
- Is there an existing web app whose logic we can reuse?
- How custom does the UI need to be — standard platform components, or a fully bespoke design system?
- What's the team's existing language experience, and how much ramp-up time does the timeline allow?
Our take
For most client projects with an existing web presence and a normal app-store feature set, we lean React Native — it gets teams to a working build fastest and keeps the codebase approachable. For products where the UI is the differentiator, or where performance under animation is non-negotiable, we lean Flutter. Either way, the architecture decisions you make in the first two weeks — navigation structure, state management, offline strategy — matter more than the framework logo on the splash screen.