Friend debts
Track debts, remaining balances, partial or full settlements and historical movements without deleting economic history.
Group expenses
Shared expense portions become obligations between group members, while unrelated member-to-member debt stays isolated from the owner's personal cash flow.
Payment claims and confirmation
Account-bound flows can represent an 'I paid' claim for the counterparty to approve or reject; a claim alone does not rewrite the other person's financial truth.
Privacy and isolation
Cross-account visibility and mutation remain bounded by user/profile authorization instead of leaking unrelated group obligations into personal finance.