iOS and Android Specs

[Jim sims]

Is there a webpage that lists current items required for iOS and Android
apps?

Things like icon sizes and requirements, Splash Screen details (to have or
have not), stack sizes for various machines (various iPads, various
mobiles/iPhones, whatever), LC resolution independence, etc.

Also current Apple- iTunes requirements, and the surely multitude of other
things I have no clue about :-P

I hope there is such a beast...

sims