APK? Well he's talk about iOS even then on Android you can write native code and compile to armv7 etc... and have optimized binaries for certain CPUs.
Ah, didn't realize it was iOS, didn't know iOS ran on multiple architectures for that matter. Is there a reason (other than incompetence) they don't just publish 2 versions for the different CPU's?
This is iTunes download.
When the user downloads, he downloads only the version that works with their CPU.