Thanks for the kind words!
At this point there isn’t a beta program for Android, but you can try out the apk and see if it works for you: https://github.com/inaturalist/iNaturalistReactNative iOS is the current priority, though.
At this point we’re mostly interested in feedback/bugs about the current release, like what’s confusing to you, are there too many icons, is it difficult to read, is there something about the current workflows that can be improved, etc. And then, feedback about what features you think would be best to add (eg messages, projects, etc). But those major things are on the horizon.