Why we use Flutter for every mobile project
After building mobile apps in React Native, native Swift/Kotlin, and Flutter, we settled on Flutter for all new projects. Here is why, including the honest trade-offs.
In 2021, we built three mobile apps in React Native. In 2022, we built two in Flutter. In 2023 and 2024, every mobile project we took on used Flutter. That pattern was not accidental. It came from comparing the real costs of each approach across multiple production projects.
This is not a framework comparison post. There are enough of those. This is specifically about why Flutter works better for the kind of projects we do and the trade-offs we accepted to get there.
What we actually build
Our mobile projects are typically: two-sided marketplace apps, on-demand service apps with driver and customer interfaces, B2B tools for field workers, and offline-first apps for low-connectivity environments. Most have a Laravel API backend. Most need to ship to both iOS and Android with a single team.
The constraints are tight budgets, compressed timelines, and clients who do not have separate iOS and Android teams. These constraints push heavily toward a single-codebase solution.
The React Native years
React Native was our first cross-platform choice. We liked the JavaScript ecosystem and the component model was familiar. The problem was the native bridge.
React Native renders using native components, which means it is always one layer away from the platform. When those native components behave differently on Android 10 versus Android 13, or when a library uses a deprecated native API on iOS 17, your app breaks in ways that are hard to reproduce and slow to fix.
We had a project where a date picker worked correctly on iOS but showed the wrong month on certain Android versions because of a bug in the underlying native date picker that the React Native wrapper exposed. We spent three days on it. That is three days we billed to a client for something that had nothing to do with their product requirements.
Flutter's rendering model
Flutter does not use native platform widgets. It has its own rendering engine (Skia, now Impeller) that draws every pixel itself. This means the button you see on Android looks exactly like the button you see on iOS because Flutter drew both of them directly.
This is the most important thing about Flutter and it is often undersold. You are not fighting platform differences. You are writing UI code once and it renders consistently everywhere.
The trade-off is that your app does not automatically look "native." A Flutter app on iOS does not use UIKit components. If your client expects an iOS app that looks exactly like the standard iOS Settings app, Flutter is not the right choice. But in five years of client work, we have had exactly one client make that request.
Dart is better than people say
When Flutter was announced, the common criticism was "why Dart?" Dart is not widely used outside Flutter and switching from JavaScript to Dart requires learning a new language.
After using Dart on production projects for three years, the honest answer is that Dart is a very good language for this use case. It is strongly typed, which catches a large class of bugs at compile time rather than runtime. Null safety was added in Dart 2.12 and it is genuinely useful. The tooling (dart analyze, dart fix) is fast and accurate.
The strong typing matters especially for API response handling. When your app receives JSON from a server and you need to deserialise it into typed objects, Dart's type system plus packages like json_serializable make this straightforward and safe.
The offline-first advantage
Several of our projects need to work in low-connectivity environments. Flutter's Hive and SQLite packages (via sqflite) are mature and well-maintained. The offline-first pattern in Flutter is: local SQLite database is the source of truth, network sync happens in the background when connectivity is available, and conflicts are resolved with timestamps or user prompts.
We used this pattern on FasalVision, our agritech app for farmers in rural Bihar and UP. 40 percent of users rely on the SMS fallback because they are often in areas with no data connection. The offline-first architecture meant we never had to say "this feature requires internet."
The honest trade-offs
Flutter apps have larger initial download sizes than native apps. A minimal Flutter app is around 4 to 5 MB larger than an equivalent native app. On 4G this is not a concern. On 2G or limited data plans, it can matter. We mitigated this for FasalVision by using deferred component loading and keeping the initial download under 15 MB.
Dart has a smaller ecosystem than JavaScript. Not every native SDK has a Flutter package. When a client needed a specific Bluetooth low-energy SDK for a hardware integration project, we had to write a platform channel to call the native SDK from Flutter. That is doable but adds time. We now ask about third-party SDK requirements during scoping.
Flutter's web support is usable but not production-ready for complex applications in our opinion. We use Flutter for mobile and Laravel plus React or Next.js for web. We do not use Flutter for web projects.
The conclusion
Flutter wins for our projects because it reduces the number of environments we have to manage, eliminates the native bridge problem, and lets a small team ship to both platforms from one codebase without maintaining separate skill sets.
The consistent rendering model means we spend less time debugging platform-specific issues and more time building features. For founder-led development shops and fast-moving product teams, that trade-off is almost always worth it.
If you are deciding between Flutter and React Native for your next project and the team already has deep JavaScript expertise and you are building something that maps closely to native platform UI patterns, React Native might be the better call. In most other cases, Flutter is where we start the conversation.