https://t.me/MiniCashSplitBot/miniapp
(source: https://github.com/makos135/tg-mini-split-cash-app/commit/70bf726c2293e329673e69eaaef345ed66283464)

Application allow to split bills between users. In this app user can create and share «Rooms» (Room is a group of transactions that should be splited). Add new «Splits» (Transactions) to «Rooms» And split all transaction bettwen users to know how much money is users should send to each other. Can be usefull for trips with friends.