GreyTick Privacy Policy
Last updated: 17 July 2026
What GreyTick does NOT collect
- GreyTick does not collect, store, or transmit any personal data.
- GreyTick does not inspect, parse, or log the contents of your network traffic. Packets routed into the local VPN are read into a buffer and discarded immediately.
- GreyTick contains no analytics, no crash reporting, no telemetry, no advertising IDs, and no third-party SDKs that report data home.
- GreyTick does not require an account.
What stays on your device
- The list of apps you've chosen to block.
- Your schedules.
- Your settings (theme, system-app visibility, etc.).
- A flag indicating whether you've upgraded to GreyTick Pro.
All of the above is stored locally using Android's DataStore API. Uninstalling the app removes everything.
Network activity
The only network traffic GreyTick itself generates is DNS resolution, which is required for the firewall to function. DNS queries from apps you've protected are forwarded to the resolver you choose in settings — your network's default, or an encrypted DNS-over-HTTPS provider such as Cloudflare or NextDNS. GreyTick never logs, stores, or transmits the contents of these queries anywhere else.
What Google handles
If you upgrade to GreyTick Pro, your purchase is processed by Google Play Billing. Google receives the standard purchase information per their own Privacy Policy. GreyTick only sees an entitlement flag ("you have Pro") returned by Play.
Permissions GreyTick uses
| Permission | Why |
|---|---|
INTERNET | Required by Android even though GreyTick only sets up a local sink. |
BIND_VPN_SERVICE | Required to claim the local VPN interface. |
FOREGROUND_SERVICE (specialUse) | Required by Android 14+ for VPN services. |
QUERY_ALL_PACKAGES | Required so the app picker can list installed apps for you to choose from. |
POST_NOTIFICATIONS | To show the silent status notification while GreyTick is on. |
RECEIVE_BOOT_COMPLETED | To restart the VPN after device reboot. |
SCHEDULE_EXACT_ALARM | So scheduled blocks start and end on time. |
REQUEST_IGNORE_BATTERY_OPTIMIZATIONS | So GreyTick survives aggressive OEM battery savers. |
Contact
- Email: ghost@asquarete.com
- Author: Asquarete
If you discover a security issue, please email the address above before publicly disclosing it.