It would be nice if Nostr apps tracked the zaps they sent. In particular I'd like to keep track of for which zap request I haven't seen the zap receipt yet. Since the app can't know which invoices were actually paid, a user should be able to delete entries from that list.
Discussion
For example I zapped this message by nostr:npub1vadcfln4ugt2h9ruwsuwu5vu5am4xaka7pw6m7axy79aqyhp6u5q9knuu7, but I don't see this reflected yet. Having an overview of zap attempts may help debug issues with them.