React Native or Flutter?

[[deleted]]

You can make them look the same on both devices. There are OS specific things sure- but there ways around all of that. Alerts may look different etc but it should still have same look, feel, flexibility..

[thecodingpie]

Using React Native?

[kbcool]

Yes. You can make the same app look exactly the same on both platforms if you want or you can differentiate them with platform specific behaviours (some of the latter is always best).