Comment by Tidash

1500$ MRR (or ~1000$ after taxes and operating costs) with a (native) Plex audiobook player for iOS and Android.

Android accounts for 85% of the userbase and has been the focus last year with a 2.0 release so it's in much better shape than the iOS version, which is still in 1.0 today. MRR is growing 5-10% per month, not sure how big the niche is yet. It's a lot of efforts to maintain both platforms as native apps with a high level of quality, but trully convinced crossplatform solution are not worth it either.

-> https://play.google.com/store/apps/details?id=app.bookcamp.a...