Privacy Policy
Learn about GlaShield's privacy policy.
We detail how your personal information is handled and protected.
Last updated: September 26, 2026
1. Use of Advertising ID
A unique ID is used when displaying advertisements.
This information does not identify you personally.
Ads
- This app shows ads with Google AdMob. To deliver ads, device information such as the advertising ID (Android advertising ID / iOS IDFA) may be sent to Google. See Google's policy for details.
- In the EEA, the UK, and some other regions, a consent screen (Google's consent management) is shown before ads. You can change your choice at any time from "Change ad settings" in Settings.
- On iOS, the OS asks whether you allow tracking across apps. If you do not allow it, you can still use the app (ad personalization is limited).
2. Network Access
Network access is used to display advertisements within the app, and to buy or restore "Remove ads (one-time purchase)".
Data Security
Your visit records, eye drop records, and eye drops & alarms are stored on your device, and the app never sends them to an external server. However, they may be included in your device's OS backup (iCloud Backup / Google backup) and may come back when you restore the device.
You can save and restore a backup file of your records from "Back up your data" in Settings. You choose where to save it (iCloud Drive, Google Drive, etc.).
3. Data Retention
- Data you register, such as visit records, eye drop records, and eye drops & alarms, is stored on your device until you delete it or delete the app (it may remain in your device's OS backup).
- The app never sends this data to or stores it on any external server.
- The Advertising ID used for ad delivery can be reset or disabled at any time from your device's OS settings.
4. How to Delete Your Data
You can delete data stored in the app at any time.
Delete individual records
- Open the "Eye Drops" or "Visits" tab (visits are listed under "List").
- Tap the delete (trash) button on the right side of the record card you want to remove. You can also tap the card and choose "Delete" on the detail screen.
- Choose "Delete" in the confirmation dialog. The record is deleted from your device.
Delete an alarm
- Open "Eye drops & alarms" from the "Eye Drops" tab.
- Tap the delete (trash) button on the right side of the alarm, then choose "Delete" in the confirmation dialog.
- The alarm disappears from the list and its notifications stop.
Deleting an alarm does not delete the eye drop records made with it (including the eye drop name). To delete those records too, delete them from the "Eye Drops" tab.
Note: To keep your records linked, the details of a deleted alarm (eye drop name, time, and memo) stay on your device without being shown in the app. To delete everything, including these, use "Delete all records" below.
Delete all data at once
You can delete all records on the device at once from "Delete all records" in Settings (you will be asked twice; this cannot be undone). This deletes all eye drop records, visit records, and eye drops & alarms, and stops alarm notifications. Settings such as your target pressure and font size are kept.
Deleting the app also deletes the records on the device.
- Android: Long-press the "GlaShield" icon on the home screen or app drawer, then tap "Uninstall".
- iOS: Long-press the "GlaShield" icon on the home screen, tap "Remove App", then "Delete App".
Note: Your records remain in your device's OS backup and in any backup files you saved.
5. Purchases
If you buy "Remove ads (one-time purchase)", payment is handled by the App Store / Google Play. The app never receives payment details such as your name or card number. The app stores only whether you have purchased it, on your device, and never sends it anywhere.