Privacy

Last updated 14 November 2026. ChowChow Labs runs City Costs.

What we keep

• Guests: saved cities and history stay in your browser tab (session storage) and aren't sent to us.
• Accounts: your email address and sign-in method (through Supabase), the cities, comparisons and budgets you save, and your research history (cities and comparisons you open), kept for 12 months. You can pause or clear history and delete your account at any time.
• Premium: Paddle handles payment details. We keep your Paddle customer and subscription IDs and your plan status. Paddle keeps billing records for as long as the law requires.
• Downloads: we record the time, size and format of each download to apply the daily limit. Files are built when you ask and not stored.

Advertising

Visitors without Premium see Adsterra ads in sandboxed frames that can't read this site's pages or your account. In the European Economic Area, the UK and Switzerland, ads load only after you agree; change this any time with "Cookie and ad settings" at the bottom of every page.

Statistics

We count page views with ChowChow Labs' own statistics, without advertising cookies.

Your rights

Ask for a copy of your data, a correction or deletion: chowchowbuy@gmail.com.