What a expense splitting app needs
- Groups (trip, house, couple)
- Expenses with flexible splits (equal/exact/shares)
- Balances with debt simplification
- Settle-up recording
- Export group history
The screens
| Screen | What it does |
|---|---|
| Groups | Your groups with net balance |
| Group Detail | Expenses feed + who owes whom |
| Add Expense | Amount, payer, split method |
| Settle Up | Record payments between members |
| Profile | Overall balance, export, settings |
The data model
Group: name, memberIds[]Expense: groupId, amount, paidBy, splits[]Settlement: groupId, from, to, amount, date
The build prompt (copy this)
Paste this into ShipNative and it becomes a working React Native app with these screens, navigable in a live preview, in about two minutes:
Then iterate with small, screen-specific prompts (“make the primary button bigger”, “add an empty state”), preview on your own phone, and export the full Expo project whenever you want. The full method: how to build an app with AI.
How it makes money
Generous free core + one-time unlock ($5–10) — position directly against subscription fatigue with "no subscription, ever."
Implementation and the revenue math for every model: how to make money from an app. When you’re ready to ship: App Store and Google Play publishing guides.
Build it now
The prompt above is free to run at shipnative.dev — working expense splitting app on your phone today, full code export, no credit card.