I haven’t tried a recent enough version of react-navigation to comment, but the older version was so bad in terms of complexity, missing basic features and inconsistent paradigms that I am permanently taste averted to ever installing the npm package again.

react-native-navigation appears to me to be the best available option. The main downside is that it kind of “takes over” your app in terms of the native bootstrapping process on either platform, which can make integrating other native modules slightly more challenging.

Your app looks fantastic, by the way!