Second after Relay, but it was pretty close. This is awesome news though as I could not find anything for Lemmy. Hopefully soon on F-Droid & in the future with kbin support as well.
PSA: if you install Obtanium, it'll works as an updater for any git repo release apps like this. Just link the source code page and enable "enable prerelease" and it'll download the APK, and it'll check it periodically to run seamless updates. Also Obtainium will update itself from grabbing its own releases from it's git repo page.
It's still in beta but it's fucking amazing. Brings me so much joy to see Infinity live on. I'm using the same theme and settings I did when I use Reddit and it's almost as if I've never left. Just on a better platform now without shitty policies.
Some on the old functionality isn't there yet, like tabbed browsing of subs/communities. And it lacks some core lemmy stuff like blocking. It does, however, cover everything you need for basic scrolling and enjoying. Infinity was never my top reddit app, but it was still great. I think, if development of this version keeps up pace, it's going to become very popular.