Group Expense Splitter
Log who paid for what and get the fewest transfers that settle it.
IntermediateWeb appProductivity10–20hAI-buildable 4/5no setupworth shipping
Track shared expenses across a group, then compute the minimum set of payments that settles everyone up. Anyone who has been on a trip knows the problem; the debt-simplification algorithm is a genuinely interesting graph reduction.
UI
Logic
Useful
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Core features · 7
- Add people to a group
- Log an expense with a payer and the people it covers
- Uneven splits are supported, not just equal shares
- Running balances show who owes what overall
- A settle-up view lists the minimum transfers needed
- Expenses can be edited and deleted with balances recalculating
- Rounding never leaves a stray cent unaccounted for
The interesting part
- Minimising the number of transfers, which is a real optimisation problem
- Splitting amounts that don't divide evenly without losing a cent
- Recalculating the whole graph efficiently on every edit
Once it works
- Add multiple currencies with conversion
- Add recurring shared expenses
- Add an exportable settlement summary
Suggested stack
reacttypescripttailwindlocalstorage