This policy explains how ZenTock (止观木鱼) handles data and how to manage it or request deletion.
1. Offline practice and local data
Tapping, rubbing, instruments, sounds, auto tap, Today, levels and settings work offline. Practice, settings and unsent drafts stay on your device.
No personal account, advertising, payments or subscriptions are required. Installation credentials identify an installation, not a cross-device account. Normal updates preserve data; uninstalling or clearing system app data may remove records and credentials.
2. Optional connection and purposes
Reading this policy does not enable connection. Once you agree, the app sends a random installation request ID, authentication information and edition details to register and check services, even before you send feedback. Checks may run on launch, foreground return, opening Settings and network recovery, with foreground checks about every two minutes as needed.
Installation credentials: the server keeps installation IDs and credential hashes for authentication, deduplication, abuse prevention and deletion. These are not advertising IDs, but they link requests from one installation and are not fully anonymous.
Feedback: only explicit submission sends your text, request ID and credentials. The server stores submission time and associated records to handle feedback and improve the app. Do not include unnecessary sensitive information.
Connection information: servers receive IP addresses, request times, paths, outcomes and necessary errors for operation and troubleshooting. Rate limits use salted IP hashes; this does not mean every network log excludes IP addresses.
3. Providers and permissions
Tencent Cloud Lighthouse hosts the service. The current server and database backups are in Beijing, China. Microsoft Outlook and your email provider process email requests, including sender addresses, text and necessary delivery information; processing may occur outside the app server’s location.
The app uses network access for optional services, device audio and haptics for practice, and supported background media capabilities for auto tap. It does not require contacts, photos, precise location or microphone access. We do not sell personal data or use advertising tracking or third-party marketing analytics.
4. Retention and protection
Data
Retention and deletion
Local practice, settings and drafts
Stay on your device until you clear them. A server-side deletion cannot erase local device files. Clearing data may be irreversible.
Submitted feedback
Normally up to 180 days, with hourly expiry cleanup. An accepted and verified deletion request can remove identifiable feedback earlier.
Installation and linked cloud data
Kept while the installation is in use, until deletion. Deleting the installation removes linked feedback.
Database backups
Daily backups on the same Beijing server expire within 15 days. They are isolated from normal use. If a backup must be restored, confirmed deletion requests must be reapplied before the data is used again.
Service logs and rate limits
Runtime and dedicated web access/error logs expire within 30 days. Management audit records expire after 30 days with hourly cleanup; rate-limit counters expire when their limit window ends. Necessary security logs are not used to rebuild deleted practice or feedback.
Request emails
Used only to verify and handle your request and reply to you. Unnecessary content is removed after handling. If specific information must be retained for a legal obligation or dispute, we will explain the scope, reason and applicable period.
HTTPS, authentication and administrative permissions protect access. We take reasonable safeguards but cannot guarantee absolute security.
5. Choices and deletion
You may pause optional connection and continue offline practice. Pausing or uninstalling does not erase previously submitted cloud data. While installation credentials remain, use the local/cloud deletion controls available in your installed version. Depending on the version, Connection & records is in Settings or About.
See how to delete data in the app. If you have deleted the app or cannot use it, request deletion using the email at the end of that page, without signing in or reinstalling. You may also request access, correction and an explanation. If records cannot be reliably identified, we will explain and request only necessary verification details. Do not send passwords, verification codes or access tokens.
6. Minors and volunteered information
Do not include unnecessary sensitive information about children, other people or yourself in feedback or email. Contact us if you believe information should not have been collected.
7. Contact and updates
Privacy and deletion contact: calminsight@hotmail.com. Updates include a new date. Material changes to data use will be explained and require the relevant choice before processing. This policy describes actual processing where an older app’s brief notice is outdated; new purposes still require separate notice.
Effective / updated: 17 September 2026 · v1 and full editions
This policy explains how ZenTock (止观木鱼) handles data and how to manage it or request deletion.
1. Offline practice and editions
Tapping, rubbing, instruments, sounds, auto tap, Today, levels and settings work offline. Practice, settings and unsent drafts stay on your device. v1 does not upload practice records. With consent, the full edition uploads practice for point validation and supports online collections and drawing.
No personal account, advertising, payments or subscriptions are required. Installation credentials identify an installation, not a cross-device account. Normal updates preserve data; uninstalling or clearing system app data may remove records and credentials.
2. Optional connection and purposes
Reading this policy does not enable connection. Once you agree, the app sends a random installation request ID, authentication information and edition details to register and check services, even before you send feedback. Checks may run on launch, foreground return, opening Settings and network recovery, with foreground checks about every two minutes as needed.
Installation credentials: the server keeps installation IDs and credential hashes for authentication, deduplication, abuse prevention and deletion. These are not advertising IDs, but they link requests from one installation and are not fully anonymous.
Feedback: only explicit submission sends your text, request ID and credentials. The server stores submission time and associated records to handle feedback and improve the app. Do not include unnecessary sensitive information.
Full-edition records: tap times, instruments and counts support point validation, drawing and collections. Valid records from the latest seven days can be verified; older practice remains in local progress. v1 does not call these interfaces.
Connection information: servers receive IP addresses, request times, paths, outcomes and necessary errors for operation and troubleshooting. Rate limits use salted IP hashes; this does not mean every network log excludes IP addresses.
3. Providers and permissions
Tencent Cloud Lighthouse hosts the service. The current server and database backups are in Beijing, China. Microsoft Outlook and your email provider process email requests, including sender addresses, text and necessary delivery information; processing may occur outside the app server’s location.
The app uses network access for optional services, device audio and haptics for practice, and supported background media capabilities for auto tap. It does not require contacts, photos, precise location or microphone access. We do not sell personal data or use advertising tracking or third-party marketing analytics.
4. Retention and protection
Data
Retention and deletion
Local practice, settings and drafts
Stay on your device until you clear them. A server-side deletion cannot erase local device files. Clearing data may be irreversible.
Submitted feedback
Normally up to 180 days, with hourly expiry cleanup. An accepted and verified deletion request can remove identifiable feedback earlier.
Installation and linked cloud data
Kept while the installation is in use, until deletion. Deleting the installation removes linked feedback; the full edition also removes its points, uploaded practice and collection/draw records from the active database.
Database backups
Daily backups on the same Beijing server expire within 15 days. They are isolated from normal use. If a backup must be restored, confirmed deletion requests must be reapplied before the data is used again.
Service logs and rate limits
Runtime and dedicated web access/error logs expire within 30 days. Management audit records expire after 30 days with hourly cleanup; rate-limit counters expire when their limit window ends. Necessary security logs are not used to rebuild deleted practice or feedback.
Request emails
Used only to verify and handle your request and reply to you. Unnecessary content is removed after handling. If specific information must be retained for a legal obligation or dispute, we will explain the scope, reason and applicable period.
HTTPS, authentication and administrative permissions protect access. We take reasonable safeguards but cannot guarantee absolute security.
5. Choices and deletion
You may pause optional connection and continue offline practice. Pausing or uninstalling does not erase previously submitted cloud data. While installation credentials remain, use the local/cloud deletion controls available in your installed version. Depending on the version, Connection & records is in Settings or About.
See how to delete data in the app. If you have deleted the app or cannot use it, request deletion using the email at the end of that page, without signing in or reinstalling. You may also request access, correction and an explanation. If records cannot be reliably identified, we will explain and request only necessary verification details. Do not send passwords, verification codes or access tokens.
6. Minors and volunteered information
Do not include unnecessary sensitive information about children, other people or yourself in feedback or email. Contact us if you believe information should not have been collected.
7. Contact and updates
Privacy and deletion contact: calminsight@hotmail.com. Updates include a new date. Material changes to data use will be explained and require the relevant choice before processing. This policy describes actual processing and edition differences where an older app’s brief notice is outdated; new purposes still require separate notice.