Your dataOn this device

Your study data

Your flags, review schedule, and read-progress are saved in this browser on this device — no account, no server. To move them to another device (or keep a safety copy), download a backup file here and restore it on the other device.

Back up

Download everything above as a single file. Keep it safe, or carry it to another device.

Download my data

Restore

Load a backup file. It merges with what's already here — nothing is lost, and the most recent of each unit wins.

Choose a backup file…

Delete local data

Remove Datum’s study progress, unlocks, referral tags, and interface preferences from this browser. This cannot delete an email or feedback message you already submitted; contact us for those requests.

Delete data on this device

Use a backup file whenever you want to preserve or move your progress.