How-toStudentsTeachers

Sign in and sync your devices

Optional email sign-in — no password — so your XP, progress and paper work follow you to every device.

4 steps about 2 min Students, Teachers

Step 1: Ask for a code
Where: Top bar → account button → Email me a code
Type your email. A six-digit code (valid 10 minutes) and a sign-in link arrive by email.
Open Account
Step 2: Enter the code
Where: “Check your inbox”
It signs in by itself once six digits are in — or tap the link in the email. Nothing on this device is lost: it merges with the account.
Step 3: Do the same on your other devices
Where: Each device
XP from every device adds up without counting twice. The account page shows Synced … and how many devices.
Step 4: Sign out or delete
Where: Account → Sign out / Delete my account
Signing out keeps this device's progress; deleting removes the account from the server.

Common questions

I didn't get the code

Check spam and promotions, wait a minute, then Resend code. Gmail addresses with dots or +tags reach the same account.

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