- Own product
- Live
ParkMath, UK airport parking cost calculator
Compares what it costs to park, get dropped off or use a lounge at UK airports, with every price sourced and dated.
- For
- My own product
- Status
- Live at parkmath.co.uk. Free to use. Some outbound links are affiliate links.
- Period
- 2026
- What I did
- Web application, Data modelling, Calculators
The problem
Working out the cheapest way to get to an airport means comparing parking, drop-off charges and lounge prices across pages that go out of date without saying so.
The approach
Every price in the dataset must carry a source URL and the date it was last checked, and a schema rejects any record that doesn’t. All money is handled in whole pence, so totals never drift by a fraction of a penny.
What was built
A calculator site covering parking, drop-off and lounge costs, in a monorepo that shares its data and maths with sister sites.
Proof points
- Every price record carries a source URL and a verified-on date, enforced by a Zod schema.
- Money is integer pence throughout.
- Covered by unit tests and browser tests.
- Prices are dated on the page, so a visitor can see how fresh they are.
Built with
- Next.js 16
- TypeScript
- Zod
- Vitest
- Playwright
- pnpm + Turborepo
- Vercel
- Cloudflare
Want something like this built?
Tell me about your business. I’ll send a short video and a homepage preview, or tell you within 2 working days if I can’t take yours on. No obligation.