Section 3.2.1 (vii) - Apps may enable individual users to give a monetary gift to another individual without using in-app purchase, provided that (a) the gift is a completely optional choice by the gi...
I think Zap splits might be a problem though?
“Apps may use in-app purchase currencies to enable customers to “tip” the developer or digital content providers in the app.”
“Apps may use in-app purchase currencies to enable customers to “tip” the developer or digital content providers in the app.”