I think this is a novel approach that does not exist on centralized appstore or play store. For instance nostr:npub16r0tl8a39hhcrapa03559xahsjqj4s0y6t2n5gpdk64v06jtgekqdkz5pl can submit an app repo for nostr:npub10r8xl2njyepcw2zwv3a6dyufj4e4ajx86hz6v4ehu4gnpupxxp7stjt2p8 consideration, and review. 

Placeholder feature request: 

https://github.com/zapstore/zapstore/issues/13