As far as general releases go, I'll try to keep all the different versions in sync (GitHub, Google Play, TestFlight) to minimize the amount of confusion.
I would like to give a big thanks to @CTalvio for helping with the graphics and screenshots that you see on the listing page, and others for contributing to the overall project! This would not be possible without all their help. Thunder is a community-driven project, and all your contributions towards the project help shape the way it is. If you are interested in contributing to Thunder in any way, feel free to reach out!
I think Thunder has the best design of all of the Android apps that I've tried. The only feature that is missing now that I've identified as personally wanting is being able to search Lemmy posts and comments (rather than just communities). I'm cool with being patient as more features are added, because overall, Thunder is so enjoyable to use.
There's also Slide, which is a fork of the old Reddit app. But, that's not very active. There's quite a few actually. There was a thread with a bunch linked but I don't remember where it was posted.