FreeKeep for Steam does not collect, sell or share any personal data. It has no server, no analytics, no tracking and no ads.

• It never asks for, reads or stores your Steam password. It cannot read Steam's login cookie (Steam marks it HttpOnly and FreeKeep has no "cookies" permission), and it never stores session tokens, your account id or your account name.
• It only connects to https://store.steampowered.com, to find free promotions, check which of them your account already owns, and claim them. Firefox attaches your existing Steam login to these requests, as it does when you visit the store yourself. To claim, FreeKeep sends back the store's anti-forgery code (sessionid) exactly like the store's own "Add to Account" button; it is kept in memory for that request only. Game images load from Steam's image servers (*.steamstatic.com).
• It opens a Steam store tab only when you ask it to renew your Steam login or open a store page.
• Your settings, public data about current promotions, recent check results, your login state and your Steam store region (country code) are stored only in Firefox's extension storage on your device, and are deleted when you remove the add-on.
• Optional and off by default: "Renew automatically" asks for access to https://login.steampowered.com to renew Steam's 24-hour web login (Firefox handles the cookies; FreeKeep cannot see them). "Epic reminders" asks for access to Epic's public free-games list at store-site-backend-static-ipv4.ak.epicgames.com; that request is anonymous and contains only your browser language. Turning either off removes the permission again.
• "Copy diagnostics" copies a report with your settings and recent check results, without account data, to your clipboard. It is only shared if you paste it somewhere yourself.