Privacy Policy
Last updated: March 2026
What we collect
When you create an account, we store your email address and authentication credentials via Supabase. When you use the portfolio and watchlist features, we store the lot data you add — artists, estimated values, realised prices, and notes you enter.
We do not collect payment information. We do not track you across other websites. We do not run advertising.
How we use it
Your data is used solely to power Hammer — to show you your watchlist, your portfolio P&L, and to personalise your feed. We do not sell, share, or license your data to any third party.
Where it's stored
All user data is stored in Supabase (EU region). Supabase is SOC 2 Type II certified. Auction lot data shown in the feed is sourced from public auction house listings.
Deleting your data
Email support@gethammer.app and we will delete your account and all associated data within 30 days.
Cookies
We use a single session cookie to keep you logged in. No third-party tracking cookies.
Contact
Questions? support@gethammer.app