Sometimes when people put their hard work into building an app for free, they don’t also want to pay $99 a year so that some bullshit company can profit off of the app developers hard work.
iOS developers are REQUIRED to own a mac and are REQUIRED to pay apple $99 a year. That means it is more costly to develop open source for iOS or any apple product. That’s why apple is terrible.
I generally like Android from the perspective of more availability to the ecosystem. I think there’s even an environment to run android apps easily on desktop too or any environment for that matter.
In general open source solutions can simply reach more people, which is why there’s more projects that are Android based.