<Hourstack> Privacy Policy
Effective date: October 16, 2026
Hourstack (the “App”) values your privacy and complies with applicable laws. This Privacy Policy explains how information is processed when you use the App.
Article 1 (Purpose of Processing)
The App is operated to provide study planning, timers, records, lock-screen guidance, and related services.
Service data such as study records and settings are stored on your device. The developer does not receive this data on a server or collect or store it directly.
However, the App may use third-party services—Google Firebase Analytics and Google AdMob—for usage analytics, service improvement, and advertising. Some information may be processed in that course.
Article 2 (Information Processed)
Information stored on the device
To provide App features, the following may be stored on your device:
Subjects, timetable/plans, D-day, and study sessions (start/end times, study duration, etc.)
App settings (daily goal, theme, notifications, lock-screen display settings, etc.)
Focus-related metrics such as distraction time and phone-check counts (when those features are used)
Information processed under Android permissions
The following permissions may be required to provide the service. Related information is used only on the device and is not sent to the developer’s server:
Display over other apps (to show study guidance on the lock screen or over other screens)
Usage access (to detect use of non-allowed apps during study)
Notifications (to deliver study- and plan-related notifications)
Battery optimization exemption (so lock-screen guidance can run reliably)
Information that may be processed automatically through third-party services
When Google Firebase Analytics and Google AdMob are used, the following may be processed automatically:
Advertising ID
Device information (device model, OS version, etc.)
App usage information
App launch and usage statistics
Diagnostic information
IP address
Ad performance measurement information
The types of information collected and how they are processed may vary under Google’s policies.
The App does not provide account registration or login.
Article 3 (Retention and Use Period)
The developer does not collect or retain on-device service data on a server.
Information stored on the device remains there until you delete the App or delete the relevant data within the App.
Processing and retention by third-party services such as Google Firebase Analytics and Google AdMob follow those providers’ policies.
Article 4 (Use of Third-Party Services)
The App may use the following third-party services for operation and advertising:
Service: Google Firebase Analytics
Policy: Google Privacy Policy
Service: Google AdMob
Policy: Google Privacy Policy
Ad settings: Google Ads Settings
The developer does not sell, rent, or otherwise provide on-device service data such as study records or timetables to third parties.
Article 5 (Your Rights)
You may delete stored data in the App or on your device settings, and you may withdraw related permissions or notifications.
Uninstalling the App also deletes information stored on the device.
For information processed by Google, you may exercise related rights through Google’s policies and account settings.
Article 6 (Privacy Contact)
For privacy-related inquiries, contact:
Email: carenest.studio.help@gmail.com
The developer will endeavor to respond as promptly as possible.
Article 7 (Changes to This Policy)
This Privacy Policy may be updated when laws or the service change.
Material changes will be announced in the App or on a related page.
Effective date of this policy: October 16, 2026