Last updated: March 11, 2026
GrindLock is built with privacy as a core principle. We believe your data belongs to you and should stay on your device. This Privacy Policy explains our practices regarding data collection, storage, and usage.
We do not collect, transmit, or sell any personal data.
GrindLock does not require an account, does not use analytics SDKs, and does not track user behavior. All app functionality operates entirely on your device.
All user data is stored locally on your device using iOS UserDefaults. This includes:
This data never leaves your device and is deleted if you uninstall the app.
GrindLock uses Apple's FamilyControls framework to enforce app blocking. This requires Screen Time permissions, which you grant voluntarily when setting up the app. GrindLock does not access information about which apps are installed on your device beyond those you explicitly select to block.
GrindLock uses App Group containers to share data between the main app and its Screen Time extensions. This communication happens entirely on-device and is necessary for the app to function properly. No data is transmitted to external servers.
GrindLock does not integrate with third-party analytics, advertising, or tracking services. We do not use cookies, tracking pixels, or similar technologies.
When you download GrindLock from the Apple App Store, Apple may collect certain information as part of the download process. This is governed by Apple's Privacy Policy, not ours. GrindLock has no access to this information.
Because all data is stored locally on your device, it benefits from the security protections built into iOS, including device encryption and biometric authentication. We recommend keeping your device secure with a passcode or Face ID/Touch ID.
GrindLock is suitable for users aged 13 and older. Because we do not collect any data, we are not subject to special children's privacy regulations. However, we recommend parental supervision for younger users.
We may update this Privacy Policy from time to time to reflect changes in the app or legal requirements. Any changes will be posted on this page with an updated "Last updated" date. We will never change our core commitment to keeping your data on your device.
Because all data is stored locally on your device, you have complete control over it. You can view, modify, or delete your data at any time through the app settings or by uninstalling the app.
If you have questions about this Privacy Policy or GrindLock's privacy practices, please contact us at: support@grindlock.app