React Native and Flutter both let you build for iOS and Android from a single codebase, and both are mature, production-proven choices used by large companies today. The right pick for an Indian startup depends less on which is technically superior and more on your specific situation.
React Native
Built on JavaScript and React, which means if your team already has web developers who know React, they can contribute to the mobile app with a much shorter learning curve. It has a large, mature ecosystem of libraries, and it is the more common choice among Indian development teams, which makes hiring or finding a development partner easier.
Flutter
Built on Dart, a language most teams have to learn from scratch, but it compiles to native code and generally delivers smoother animations and more consistent UI rendering across devices, since it does not rely on native UI components that can behave slightly differently between platforms. Google backs it heavily, and it has grown fast in adoption over the last few years.
How to actually decide
If your team already has strong React or JavaScript skills, React Native gets you moving faster with less retraining. If your app relies heavily on custom, highly polished UI and animation, Flutter tends to deliver a more consistent result across both platforms. If you are choosing a development partner rather than building in-house, ask which framework their team has the deeper bench in, since a team that is genuinely strong in one will usually outperform a team spread thin trying to offer both equally well.
What matters more than the framework choice
Both frameworks can produce excellent or mediocre apps depending entirely on the team building with them. The framework decision matters less than choosing developers who write clean, maintainable code and test properly on real devices, not just a simulator.
If you are trying to decide between the two for your specific app, our app team can walk through the tradeoffs against your actual requirements rather than a generic recommendation.