Free · Works offline · No app store needed
Split expenses with your group. Even offline. Even if they never install anything.
Who paid what, who owes whom — per currency, online or off. Add friends by name; they join later, or never.
“We'll sort it out later.”
Nobody ever sorted it out.
“Just download the app!”
Half the group never installed it.
“Wait — is that in euros or dollars?”
The summary made no sense by day three.
How it works
Three steps. The first one takes ten seconds.
- 01
Create a group, add people by name
No accounts to wait for. Anyone can claim their spot later with a link.
- 02
Record expenses the way they happened
One payer or several. Split equally, by amount, by %, or with adjustments.
- 03
Settle up with the fewest transfers
Deudin suggests the fewest payments, per currency. Partial ones count too.
Features
Built for the way groups actually pay
Offline first
Add the expense at the mountain refuge. It syncs when the signal comes back.
No accounts required
Add people by name. No download, no signup, nothing.
Currencies stay separate
€ are €, $ are $. No conversions nobody asked for.
Several payers, one expense
“We split the payment” is one entry, not two.
Fewest transfers
From 12 crossed debts to 3 payments. Same balances, less back-and-forth.
Every change on record
Who changed what, when — before → after. Disputes end here.
No passwords
Sign in with your fingerprint. Passkeys, no passwords.
Leaving Splitwise?
Import your group's CSV. Per-currency balances match to the cent.
See where the money went
Spend by category, over time, and who paid vs. their share — free, not behind a paywall.
Why Deudin
The boring problems, actually solved
No dark patterns, no paywall on math.
Comparison reflects common free tiers of popular expense-splitting apps as of July 2026.
FAQ
Questions, answered
Is Deudin free?+
Yes. No ads, no expense limits.
Do my friends need an account?+
No. Add them by name; they count in every split. They can claim their spot later with a link.
Does it work without internet?+
Yes — reading and writing. Changes queue and sync automatically when you're back online.
Can I import my groups from Splitwise?+
Yes. Export your group's CSV and import it — per-currency balances match Splitwise exactly.
How do I install it on my phone?+
Open it in your browser and choose “Add to Home Screen”. No app store involved.
What if someone deletes an expense by mistake?+
Nothing is destroyed. Deletions are reversible from the activity feed.
Will it notify me when someone adds an expense?+
Only if you ask it to. Notifications are opt-in per group, and your own actions never notify you.
The next trip pays for itself in saved arguments.
Create a group now — adding your friends takes ten seconds, with or without them.