Why? That’s not even how nostr works. The zaps are sent to a wallet you choose in your profile. It’s not even a client thing. That’s kind of the point, nostr app devs don’t need to support zaps for users of those apps to be able to take advantage of zaps.  

 zaps support nostr apps that aren't supported by grants or vc. 

 i'm being politico about disintermediation :p