Sand Clock privacy policy
Last updated: 13 November 2026
The Sand Clock app works without an account and, used that way, collects nothing.
If you sign in
Signing in with Google is optional and is only needed for points. If you sign in, we keep:
- Your Google account's ID, email address, name and profile picture address, as Google provides them when you sign in. We use these only to recognise your account.
- Your points balance, the items you have unlocked, and a history of changes to your balance (purchases, unlocks and codes used).
- A record of each Google Play purchase of points, so that it is counted once.
This is stored with Google Firebase, which runs our server. We do not sell it, share it with anyone else, or use it for advertising.
Payments are handled entirely by Google Play, under Google's privacy policy. We never see your payment details.
Deleting your account
In the app, open the menu, tap Account, then Delete account. Or visit https://sandclock-510a6.web.app/delete.html. This removes everything listed above except the purchase records, which are kept for accounting but no longer linked to you.
This website
This website uses Google Analytics to count visits. Unless you agree to a cookie when asked, nothing is stored on your device and Google receives only anonymous counts of pages viewed. If you agree, Google sets a cookie so that it can tell a returning visitor from a new one. If your browser sends a "do not track" or "global privacy control" signal, your visit is not counted at all. The app itself contains no analytics.
On your device
- The app reads your phone's motion sensor so that tilting or shaking the phone moves the sand. The readings are used at that moment on your device and are not recorded.
- Your settings (such as the sand colour and 12 or 24 hour time) are kept on your device and are removed when you uninstall the app.
- The Google Play billing and sign-in components included in the app communicate with Google to do their jobs and may send Google diagnostic information about themselves. When you use points, the app also asks Google Play to confirm that it is a genuine copy installed from Google Play; Google's answer says nothing about you and is used only to keep scripts out of our server.
If this policy changes, the new version will be published at this address with a new date.
Contact: jwusch+privacy@gmail.com