iOS
Requires: iOS 16 or newer.
Status: built and working, but not yet distributable. The iOS app runs today, it shares its codebase with the macOS app, but there is no tester path yet. Apple doesn't allow sideloading a build onto someone else's iPhone the way Android does; the only route to alpha testers is TestFlight, which requires the paid Apple Developer Program that hasn't been set up yet. Until then, iOS is "works on the maintainer's phone," not something you can install.
Once TestFlight is set up, this becomes: install the TestFlight app from
the App Store, open your invite, tap Install, then point the app at your
server (Find my server, or enter http://<server-host>:8080). TestFlight
handles updates automatically from there.