Muse MuseConcept

Independent concept built on Meta's Model API. Not an official Meta product.

Build room

Bill Split Tiny

Live

Type a bill, split it fairly in seconds.

Not published

It passed its checks, but publishing was off where it was built, such as a local run, so it has no live link. Its recorded demo is in the panel.

Open the build room

What you asked for 8 of 8 checked and working

  • WorksR1: Build a tiny tip splitter that runs on one screen. Works Single screen shows bill, tip, people inputs and live result.
  • WorksR2: Keep the whole product to one screen. Works All inputs and results fit in one centered card screen.
  • WorksR3: Let the user type a made-up bill amount and number of people plus tip percent. Works Screenshot shows typed bill 62, tip 18, people 3.
  • WorksR4: Show each persons share with tip total and grand total. Works Result shows each share, tip total $12.68 and grand total $97.18.
  • WorksR5: Work with no sign in and no accounts. Works No login UI, labels say No sign in.
  • WorksR6: Work with no AI features and do all math locally. Works Text says No AI is used, totals are plain arithmetic.
  • WorksR7: Show an empty state with example values before the user types. Works Empty inputs show e.g. values and Try $84.50 example.
  • WorksR8: Show a clear inline error when bill, tip, or people count is missing or invalid. Works Inline red errors for missing tip and invalid people count.

What was checked

Checked by code

Each line is what the check ran on, and no more.

  • Passed Typecheck · Nov 2, 2026
  • Passed Build · Nov 2, 2026
  • Passed The built app starts · Nov 2, 2026
  • Passed No errors in the browser console · Nov 2, 2026
  • Passed Smoke test of the main flow · Nov 2, 2026
  • Passed requirements · Nov 2, 2026
  • Passed Its manifest is valid · Nov 2, 2026

Judged by a model

This is a model's opinion, not proof.

  • Passed A model's opinion of the screenshots, against the brief · Nov 2, 2026

Not checked

Nothing here should be taken as tested.

  • Not checked Whether its answers are true
  • Not checked ChatGPT: only a person with an account can test it
  • Not checked Installing the Claude plugin or the Muse gadget pack on a real device
  • Not checked No Prove it run: nothing it comes with was run for real

The muse

A text-only note asking for a tiny one-screen bill splitter with no sign in and no AI.

Took from it

  • The job of splitting a made-up bill across people
  • The single-step flow of type numbers and see each share
  • The tiny no-frills mood with no accounts

Left out