Some apps died from compatibility issues even before Apple killed 32-bit. Back before the iBooks store, some publishers made one app per book, and I bought Wind

Some apps died from compatibility issues even before Apple killed 32-bit. Back before the iBooks store, some publishers made one app per book, and I bought Windows Internals that way. A little while ago, before the end of 32-bit, I wanted to read it again. But the app was barely functional, it didn't accept certain touch inputs.