Costie: Split Bills & IOUs

Specter Interactive s.r.o.

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About this app

Costie makes splitting bills and tracking shared expenses effortless — so everyone knows who owes who, instantly.

Perfect for trips, roommates, couples, and any group spending. Add an expense, choose how to split (evenly or custom), and Costie keeps balances clear without awkward reminders.

No noise. Just clarity.

KEY BENEFITS
• Instant “who owes who” balances
See what you owe and what you’re owed at a glance.

• Fast bill splitting
Split expenses evenly, by custom amounts, or with partial payments.

• Built for groups
Create groups for travel, roommates, family, projects, dinners, and more.

• Works offline (offline-first)
Track expenses anywhere. Sync when you’re back online.

• No account required
Start immediately. Create an account only if you want cross-device sync.

FEATURES PEOPLE LOVE
• One-tap settle up
Close debts fast and move on.

• AI receipt scanning
Snap a photo to add items quickly.

• Multiple currencies
Great for international travel and group trip expenses.

• Car travel cost splitting
Split travel costs based on distance.

• Clear summaries & reports
Understand shared spending without spreadsheets.

PRIVACY-FIRST
Your data stays yours. Never sold or shared.

GREAT FOR
• Bill splitter for dinners and outings
• Roommate expenses (rent, utilities, groceries)
• Travel expense tracker for group trips
• Shared bill tracker for couples and families
• IOU tracker for friends

Make shared money simple.
Download Costie and settle up with confidence.

What’s new

- Bug fixes
- Tracking / splitting of traveled distance
- Tracking borrowed items