Who owes whom?|
The WhatsApp group. 47 messages. Nobody knows what's up.
The spreadsheet. Three versions. None is right.
"I'll transfer tomorrow." Three weeks ago.
The trip was great. The accounting wasn't.
There's a better way.
The financial nervous system for shared living.
Not an app. A system.
6 stages. From receipt to awareness.
Each stage works independently. Together they form an operating system.
Watch the engine work.
Enter an amount. Watch the system optimize.
For every situation in your life.
Why it's built this way.
Three decisions that change everything.
Offline-First
Because the internet isn't always there. Your money is.
Fully functional without connection. Sync happens automatically.
Zero Drift
Not a single cent is ever lost. Mathematically proven.
Largest-remainder method. 132 tests. Zero cent deviation.
Open Settlement
The engine is transparent. Every calculation is traceable.
Greedy algorithm minimizes transactions. Auditable.
Early Access — actively in development. Settlement engine open-source planned.
2015 vs. 2025
The world has changed. Your split app hasn't.
As of February 2026. Comparison based on publicly available information.
The question isn't if you switch. It's when.
Trust through proof.
No marketing claims. Just numbers.
132 Tests, 0 Failures
Every calculation is automatically tested — from simple splits to complex multi-currency scenarios.
Greedy Settlement Algorithm
Mathematically optimized payment chains. 7 debts become 3 transactions — provably.
Cent-Accurate Arithmetic
No floating-point errors. Largest-remainder method for exact percentage splits.
Early Access — actively in development. You can try it now.
You didn't know this existed.
Now you do.
Never argue about money again.
Web app opens instantly. No account. No download. Works offline.
All clear?
Is FairSplit really free?
Yes. No hidden costs, no limits, no ads. The basic version remains free forever.
Does everyone need an account?
No. Guests can participate instantly — just share the link, done. Only those who want to create groups need an account.
Does it work offline?
Yes. Add expenses even without internet. Sync happens automatically once you're back online.
Which currencies are supported?
25+ currencies with live exchange rates. Euro, Dollar, Pound, Franc, Yen and many more.
Is my data secure?
Yes. Encrypted transmission, EU servers, GDPR compliant. Every calculation is auditable and mathematically verified.