There are better FOSS apps on Android thanks to F-Droid and other efforts. Plus it's not that hard to roll something in a pipeline of an open source project tha

There are better FOSS apps on Android thanks to F-Droid and other efforts. Plus it's not that hard to roll something in a pipeline of an open source project that builds an Android app and have maintainers for it. iPhone Apps require specific hardware and tools to make and maintain, and can't easily be built on an automatic pipeline. So all the work has to be by dedicated people using manual process.