Tabby
Split a trip's costs. No app, no signup. The whole tab lives in one link you paste into the group chat.
or start your own below.
This is a made-up example. Add an expense or remove someone to see it change.
1. Who's in?
2. What got paid?
3. Who pays whom
Balances
Share
Everything is saved in this page's link. Send it to the group; anyone who opens it sees the same tab and can add to it (then share the new link back).