Muse MuseConcept

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

Build room

Fern Cup Tip Splitter

Live

Split the Fern Cup bill fairly at 15, 18 or 20 percent.

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: Show the product as the tip splitter for the fictional Fern Cup cafe with its name on screen. Works Header shows Fern Cup Tip Splitter and Split the Fern Cup bill.
  • WorksR2: Provide a bill amount input that accepts dollars and cents. Works Bill total input shows values like 84.50 and 64.80.
  • WorksR3: Provide a party size input for the number of people splitting. Works Number of people input shows values like 2, 3 and 4.
  • WorksR4: Show what each person pays at 15, 18 and 20 percent tip, with table totals. Works Cards show each pay and table total for 15, 18 and 20 percent.
  • WorksR5: Keep everything on one screen with no navigation. Works Inputs and results appear on one scrolling page with no navigation.
  • WorksR6: Save nothing. Inputs and results do not persist after reload. Works Reload screenshot no longer shows prior 84.50 for 3 and shows clear on reload note.
  • WorksR7: Show an empty prompt before a valid bill and party size are entered. Works Prompt says enter bill total and party size to see each share.
  • WorksR8: Show a clear inline error for missing or invalid bill or party size. Works Red inline message shown for 0 people and for missing party size.

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 one-screen tip splitter for the fictional Fern Cup cafe.

Took from it

  • The job of splitting a cafe bill with tip
  • Simple enter bill and party size flow
  • Friendly small cafe mood

Left out