In another life, I was building mobile apps, I thought it was a neat platform, until the size of the toolchains exploded, and the tools themselves became near unsable due to bugs and crashes; ultimately, Apple's requiring the latest hardware to push to their store is what did me in. Never again.
Bitrot: Mobile games and tools.
As I sailed across the Pacific Ocean, it became increasingly clear that building software for Apple's mobile ecosystem was unsustainable due to the frequent and massive toolchain updates, and the need for the latest generation of Apple devices to successfuly sign and publish to the platform which are quite hard to aquire in far flung countries.
Trying to maintain our iOS devices outside of western countries, or updating X Code via expensive or spotty internet was something we could no longer afford. As of march 2019, all iOS development was abandoned.
