# Privacy Policy for Sach
**Last Updated: February 1, 2026**
## Introduction
Sach ("the App") is a phone usage tracking application that helps users monitor their screen time and app usage patterns. This Privacy Policy explains how we handle your information.
## Data Collection
### Information We Collect
The App collects the following information locally on your device:
1. **App Usage Statistics**
- Application names and package identifiers
- Time spent on each application
- Screen-on time duration
- Historical usage data (past 7 days)
2. **User Preferences**
- Theme settings (Light/Dark/System)
- Notification preferences
- Reminder schedule settings
### How We Collect Data
- Usage data is collected through Android's UsageStatsManager API
- All data collection requires explicit permission from you
- Data is collected only when the App is actively running or scheduled to refresh
## Data Storage
- **All data is stored locally on your device only**
- No data is transmitted to external servers
- No cloud synchronization or backup occurs
- Data is stored using Android's SharedPreferences and local storage mechanisms
## Data Usage
We use the collected data solely to:
- Display your daily phone usage statistics
- Show app-wise breakdown of your screen time
- Provide historical usage trends
- Compare daily usage patterns
- Send optional reminder notifications (if enabled)
## Data Sharing
**We do not share, sell, or transmit your data to any third parties.**
- No analytics services
- No advertising networks
- No external servers or databases
- No cloud services
Your usage data never leaves your device.
## Permissions
The App requires the following permissions:
1. **Usage Access (PACKAGE_USAGE_STATS)**
- Required to read app usage statistics
- Accessed through Android system settings
- You can revoke this permission at any time in Android Settings
2. **Notifications (POST_NOTIFICATIONS)**
- Optional: Only needed if you enable reminder notifications
- Used to send daily screen time reminders
- Can be disabled in app settings or Android notification settings
3. **Schedule Exact Alarms (SCHEDULE_EXACT_ALARM)**
- Required for precise notification timing
- Ensures notifications are delivered at your chosen time
## Data Retention
- Usage history is stored for up to 7 days
- Settings are retained until you change them or uninstall the App
- All data is automatically deleted when you uninstall the App
## Your Rights
You have the right to:
- Revoke usage access permission at any time
- Disable notifications
- Uninstall the App to delete all stored data
- Request information about your data (contact us)
## Children's Privacy
The App does not knowingly collect information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us.
## Changes to Privacy Policy
We may update this Privacy Policy periodically. Changes will be reflected in the "Last Updated" date. Continued use of the App after changes constitutes acceptance of the updated policy.
## Third-Party Services
The App does not integrate with any third-party services, SDKs, or analytics platforms beyond the standard Android framework APIs.
## Data Security
- All data is protected by Android's built-in security mechanisms
- Data is only accessible by the App itself
- No network transmission of personal data occurs
## Contact Us
If you have questions or concerns about this Privacy Policy or your data:
**Email:** alpinelabs89@gmail.com
## Compliance
This App complies with:
- Google Play Store policies
- Android permissions best practices
- General Data Protection Regulation (GDPR) principles for user privacy
## Legal Basis for Processing
We process your data based on:
- Your explicit consent (granting usage access permission)
- Legitimate interest (providing the core functionality you requested)