Can AI build a free app to split expenses with friends?
Yes. An AI coding tool can build a simple page where you enter who paid what and it shows who owes whom, with no account or subscription.
01Why bot
- The math is simple and easy to test.
- A single-page app works on any phone.
- Syncing across everyone's phones needs a backend.
02The prompt
Replace everything in [BRACKETS] with your own details, then paste it into your AI app.
You are a web developer. Build an expense splitter. Features: add people, add expenses (who paid, amount, who shares), show balances and the fewest payments to settle. Requirements: - MUST be a single index.html file, mobile-first, saving data only in the browser. - MUST round to cents and make balances add to zero. - MUST include a 'copy summary' button. - Don't add features I didn't list. Then give me steps to publish it free and 3 test cases to check the math.
03Steps
- Run the prompt in an AI coding tool.
- Test it with the 3 cases.
- Share the link with your group.
04What can go wrong
- Browser-only data can be lost if you clear storage.
- Double-check totals on big trips.
05What to use
Claude, ChatGPT, Lovable or Replit.
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