Contact

Found a bug? A stale tax bracket, a rent number nowhere near what you actually pay, a city that should be on the list? Put it in the box. No mail app, no account.

JavaScript is off, so Send will reload the page. It still works. Or email support@cityparity.com.

What helps

Data corrections. Name what you're comparing against. The OECD tax database, a rental listing you've got open, your own payslip. Every row here cites a source, so that usually points straight at the drift.
A calculation that looks wrong. The two cities and the salary you entered. That's enough to reproduce it.
City requests. Repeats for the same city move it up the list. A line about why you're looking helps too.
Press or interview. Say the angle up front and it gets answered first.

Prefer email? support@cityparity.com reaches the same person.

This is a small project run by one person in spare time. Replies happen, sometimes in a day, sometimes a week. Silence isn't a brush-off; everything gets read.