350 × 222 pt on a 390 pt screen. The demo runs live, one press away.
Mortgage Calculator
A deposit slider whose only output is the monthly figure a buyer actually wants, with the deposit, the loan and the payment all coming out of one standard amortising formula so they can never disagree with each other.
Paste into Claude Code, Cursor or Windsurf. It builds this component 1:1 in your app.
What the prompt carriesEverything inlined, nothing fetched
- 2 files
- written in full, ready to paste
- 291 lines
- Inter
- Regular, Medium, Semi Bold, Bold, Extra Bold
- via @expo-google-fonts
- Integration rules
- ships 1:1, never re-themed to your app
- SDK 52+
The rule this design follows
It ships exactly as previewed: same colors, same type, same copy, same motion. The prompt tells your agent to build that, and not to adapt it to your existing theme.
