Costie – Split Expenses & Shared Debts (Offline First)

Costie helps you split expenses, track shared debts, and instantly see who owes who — without stress, awkward reminders, or complicated spreadsheets.

Whether you’re traveling with friends, sharing rent with roommates, or managing everyday group spending, Costie keeps everything clear, fair, and organized.

No noise. Just clarity.

Why people use Costie

✔ Know where you stand instantly
See your total balance at a glance — how much you owe, how much you’re owed, and what needs attention.

✔ Split expenses in seconds
Add expenses quickly and split them evenly or by custom amounts.

✔ Groups that make sense
Trips, roommates, families, or projects — everyone always knows who owes what.

✔ Works fully offline
No internet? No problem. Add expenses anytime. Everything syncs automatically when you’re back online.

✔ No account required
Start immediately. Create an account only if you want to sync across devices.

Smart features that reduce friction

✔ Real-time balances
No guessing. No awkward conversations.

✔ One-tap debt settlement
Settle up quickly and move on.

✔ Partial payments supported
Pay debts gradually — just like people do in real life.

✔ Multiple currencies
Perfect for travel and international groups.

✔ AI receipt scanning
Snap a photo and let Costie do the rest.

✔ Car travel cost splitting
Automatically split travel costs based on distance.

Built for real life

✔ Offline-first & conflict-free sync
Designed to work reliably everywhere.

✔ Privacy-first
Your data stays yours. Never sold or shared.

✔ Clear reports & summaries
Understand your spending without digging through numbers.

Perfect for

• Friends splitting dinner bills
• Roommates sharing rent and utilities
• Travel groups managing trip expenses
• Families tracking shared costs

Stop tracking expenses. Start feeling settled.

Download Costie and keep shared money simple.