This is incredible. Even though Apple seems hell-bent on repeating their iPad mistake on Vision Pro ("A baby computer because our users are morons and we have to keep them safe from any theoretical harm. Also, any kind of software development outside of macOS is strictly forbidden"), there is a small tinker community that works on genuinely making iPadOS useful. Another example (also shared here recently) is this:
nice work!
was reading kl_x18.h and darwin zeroes x18 on any exception return, timer interrupt included, so a quest app can't keep state there for even one scheduling window
https://www.lispm.net/apps/uhf-x11/