Comment by jakub_g

Re: iOS apps being easier to develop: device sizes are the minuscule of the problem.

The real problem is that Android vendors mess up with the OS in weird ways by adding custom ultra battery savers, removing APIs etc. which is much less predictable than dealing with a few Apple devices, that are more homogenous.

Then many vendors ship their own apps which are buggy and you need to know that vendor's Z Calendar app has a weird bug to account for.