The short version
This deletes, immediately and on your phone: all studied words, review boxes and dates, your streak, daily round counts, saved rounds and settings. It also resets the random app-instance identifier used by app statistics, so earlier statistics can no longer be linked to your phone. Deleting the app has the same effect on the data stored on your phone.
If you want us to help remove data held by the services the app uses, write to lingoop.cs@gmail.com with the subject "Lingoop Yakgwa data deletion request". Tell us roughly when you used the app; you do not need to send any personal information. We reply within 14 days and confirm what was done.
| Data | Where it is | What happens |
|---|---|---|
| Learning progress, streak, settings, paused rounds | Your phone only | Deleted immediately by Erase my progress or by deleting the app. Never sent to us. |
| App statistics (app events, approximate location from IP, app-instance identifier) — Google Analytics for Firebase | Google, on our behalf | The identifier is reset by Erase my progress. Google keeps the remaining, no-longer-linked statistics under its retention settings (we use Google's default of 2 months for user-level data). |
| Crash reports (technical crash data with a random installation identifier) — Firebase Crashlytics | Google, on our behalf | Kept by Google for 90 days, then deleted automatically. Email us to request earlier removal. |
| Advertising data (advertising identifier, IP address, ad interactions) — Google AdMob | Handled under the Google Privacy Policy. You can reset or delete your advertising ID in your phone's settings (Settings → Google → Ads), and change your ad choices in the app under Settings → Privacy & ad choices. | |
| Purchase record for "Remove ads" | Google Play | Kept by Google Play with your Google account so the purchase can be restored. We never receive your payment details. To remove it, use your Google account's Play purchase history. |
AiDEX LAB · lingoop.cs@gmail.com · Full privacy policy: aidexlab.org/bites/privacy