Support
Contact us
Email hello@tidia.app. We usually reply within a few business days, in English or Korean.
It helps to include: whether you use the Android app or the web app, your device or browser, what you did and what you saw (the exact message, if any).
Please never send student information, your recovery phrase, or screenshots that show them. We do not need them, and we cannot see or recover your records: they are only on your devices and in your own backup.
We keep support emails for one year after the request is resolved (see the Privacy Policy).
Common questions
Where are my records?
Only on your device. LessonDot has no accounts and we run no server. If you connect a backup, an encrypted copy is also kept in the app's folder of your own Google Drive.
I lost my phone. Can you restore my data?
We cannot; we never have your records. If you connected a backup, install LessonDot on the new device, choose to restore, and connect the same Google Drive account; nothing else is needed. Without a backup, the records cannot be recovered, which is why the app warns you while no backup is connected.
How do I delete my data?
- On a device: Settings → Data on this device → Erase data on this device. Uninstalling the app, or clearing this site's data in your browser, also erases it.
- Backup in Google Drive: on the Google Drive website, open Settings → Manage apps, find LessonDot, then Options → Delete hidden app data.
- App access to your storage account: disconnecting the backup in the app does not revoke access. To revoke it, remove LessonDot from the third-party connections of your Google account.
How do I change my ad privacy choices?
In the app, open Settings → Privacy choices (shown where your region has such choices). On Android you can also delete or reset your advertising ID, or turn off ad personalization, in your device settings.
How do I cancel or restore the ad-free subscription?
- The subscription applies only to the Android app. The web app always shows ads.
- Cancel: Google Play → Payments & subscriptions → Subscriptions. Uninstalling the app does not cancel it. After you cancel, no ads show until the paid period ends.
- Restore on a new Android device: sign in to Google Play with the same Google account, then Settings → Remove ads → Restore purchase in the app.
- Refunds are handled by Google Play under its refund policy. We can also help: email us with your Google Play order number (it starts with GPA).
The app shows a conflict after syncing.
When records from two devices disagree (for example a session deducted twice), the app marks it instead of guessing. Open the conflict, check it, and fix it in the app; the correction is added as a new record and nothing is deleted.
Operator
| Operator | 타이디아(Tidia) |
|---|---|
| Representative | 방준환 |
| hello@tidia.app |
See also the Privacy Policy and the Terms of Use.