Account & sign-in

Curtn uses phone numbers to sign in. When you sign up — or sign back in on a new device — we send a one-time code by SMS, and you enter it to verify the number. There's no password to remember and no email loop to manage.

Sign-in is handled by Firebase Authentication. We never see your password (there isn't one), and the code we send expires quickly.

Phone numbers give us a single, reliable identifier per account without us needing to build (or pay for) an email infrastructure or handle password resets. They also raise the cost of spinning up throwaway accounts a little, which helps keep the edit history clean.

Your phone number is private. It's never shown on your profile, and we don't share it with other users.

Your username is what shows up in your profile URL (curtn.io/u/yourname) and in mentions. It has to be unique and is chosen when you sign up.

Your display name is what other users see attached to your reviews, lists, and edits. You can change it at any time from your profile settings.

If you're switching numbers, you can update your phone in your profile settings. You'll need access to both numbers briefly during the change — we'll verify the new one before switching the old one off.

If you can't receive SMS at the number on your account, get in touch with us. Because we don't store passwords or backup email addresses, recovery isn't fully automated yet — we'll work through it with you manually.

You can delete your account from your profile settings. When you do:

• Your reviews, lists, and seen-history are removed from public view.
• Edits you made to community-maintained pages remain (the edit history exists for everyone's benefit), but they're no longer attributed to you by name.
• Any pages you claimed are released back to unclaimed so someone else can pick them up.
• Your phone number is dissociated from the account.

Account deletion is permanent — there's no undo on the user end.