But of course the primary advantage of RN is the ecosystem of developers and libraries it comes with, so if those are important to you I don’t believe Flutter will catch up any time soon. Personally I think those are a bit overrated. Any competent JS developer could pick up Dart very quickly, and all the various bits of browser knowledge a front end developer would have that are more valuable wouldn’t be applicable here, so to me “used before” only offers rather modest gains, and over the long run isn’t much to base a decision on.