Split trip expenses. Prove the math.

Splitproof is a group-travel expense ledger that shows its work — every balance traceable, every settlement explained, nothing rewritten behind your back.

Families

Families settle as one.

Add a family once. Weights per person — 1× adults, 0.5× kids, adjustable per expense — but one balance line and one payment per household. No more four separate transfers to settle one family's dinner share.

M Maya pays you3 expenses behind this €31.75
K The Kims pay yousettles as one · 2 expenses €16.45
The Kims · settles as one · 2.5 shares
Jun · Adult 1.0 Sora · Adult 1.0 Kai · Kid 0.5
Museum tickets · Maya paid
$15.00 USD
= €13.82 @ 0.9210 · rate from Mon 14 Apr Edit
Snapshot rate — visible, overridable, permanent
Multi-currency

Currencies that never rewrite history.

Pick a settling currency for the trip. Every expense keeps its original amount and the exchange rate from the day it happened — visible, overridable, permanent. Your past expenses never silently change.

Trust

Settlement you can check.

Every suggested payment expands to show exactly which expenses produced it. Flip between the simplified plan and the raw who-owes-whom view anytime. Provably minimal plans — not a black box.

Why this amount
Dinner in LisbonMaya's share · you paid €37.37
Taxi to BelémMaya's share · you paid €8.20
Museum ticketsyour share · Maya paid · $15.00 @ 0.9210 −€13.82
Total — Maya pays you €31.75
Simplified planRaw debts
No ads. Ever.
Free for a whole trip — unlimited expenses, all split methods.
Works offline — log expenses on the glacier, sync later.
Your data, exportable — CSV export, always free.

Questions, answered

Does Splitproof move money?No. It records IOUs and shows who should pay whom. You settle however you already do — bank transfer, cash, any payment app — then record it.
What does free include?A whole trip: unlimited expenses, every split method, multi-currency, offline logging, and CSV export. No ads, ever.
What happens to old expenses when rates change?Nothing. Every expense keeps its original amount and the exchange rate from the day it happened — visible, overridable, permanent.
How do families settle as one?Add a family once. Weights stay per person — 1× adults, 0.5× kids, adjustable per expense — but the family gets one balance line and one payment.
What if I'm offline?Log the expense. It's marked pending, uses an estimated rate, and syncs when you're back — the rate is finalized then, and nothing is lost.
Can I trust the simplified plan?Check it. Every transfer expands to the exact expenses behind it, and you can flip to the raw who-owes-whom view anytime. Same totals, fewer payments.