This depends on the type of functionality you need in your app. Web apps can't implement the full suite of functionality that would be available to a native app, although they are getting closer to that capability.

If the functionality that you need can be achieved with a web app, and if you can find a "React Native" developer, then the path I recommend is to use React Native to develop a single cross platform, mobile-based web app (Android and iOS), that will also be more easily made into a website-based web app.

If you'd like to discuss it in more detail with relation to the specific functionality you have in mind, let me know. I can also connect you to excellent, market-rate React Native developers in NY that I work closely with.

best,

Lee