Sharli is a free app for splitting shared expenses in small groups, like flatshares, trips, and friends. Add an expense and Sharli works out who owes whom, using the shortest path so you don't pay each other back one by one. No account needed to start, multi-currency handled automatically, works fully offline. Also tracks personal spending in the same app. No paywall, no daily limits, no ads, every feature free. Data hosted in the EU, GDPR-compliant.
Splitwise
Splittr