Yep. I could be remembering it wrong but I thought Snort had it just popped up with WoS and you put the zap amount there, rather than having the presets.

Haven't been on astral since they added zaps. And no Iphone for Damus. Lately I've been using Amethyst, Iris and Nostrgram.

Damus, astral, and snort have had that. Well only if your are testflight on damus until today. Its NIP-57. Zaps

Eximpius

Amethyst just did a new release (not in app store yet, only on apk ATM) where they did a tip thing that reveals a few pre-set tip amounts. I feel like it was inspired by SN's. 