FAQ
- Are these really free?
- Yes. No signup, no API key, no usage cap on the calculators. Built for the real estate community.
- Can I customize the colors?
- Each widget supports a light or dark theme via
data-theme="dark" on the host div. More options ship in v2.
- Does the FMR lookup use HUD data?
- Yes. HUD FY2026 Final Fair Market Rents, refreshed quarterly when HUD republishes.
- How do I report a bug?
- Email [email protected] or file a public issue at the DoorVault repository.