JP 🌈dunno why i've never thought about this before, but are there open source iOS apps? is that even possible with apple's dev/distribution ecosystem?
similarly, are there OSS android apps? at a guess i would say that's easier, but maybe i'm wrong?
George Dorn@pixelpaperyarn yes to both, though the FOSS world is much more developed on android, given easy side loading and how open the OS already is. Have a look at f-droid, which is basically an app store of only FOSS apps.