Privacy Policy
Last Updated: November 1, 2025
Our Privacy Commitment
StopwatchPro is designed with your privacy as a top priority. We believe your timing data should stay with you.
What We Collect
Nothing. StopwatchPro collects no personal information, no tracking data, and no usage analytics.
Where Your Data Lives
All your data is stored locally in your browser only:
- Timing Sessions: Saved in your browser's IndexedDB storage
- History & Analytics: Stored locally in IndexedDB
- Preferences & Settings: Saved in browser localStorage
- Custom Interval Programs: Stored in IndexedDB
This means:
- ✅ Your data never leaves your device
- ✅ We cannot access your timing history
- ✅ No servers store your personal data
- ✅ You have complete control over your data
Data Retention
Your timing data is stored in your browser until:
- You manually clear it using the "Clear History" button
- You clear your browser's storage/cache
- You uninstall or reset your browser
We do not have any retention period because we do not receive your data.
Cookies & Tracking
- No cookies: We do not use cookies for tracking or identification
- No analytics: We do not use Google Analytics, Mixpanel, or any tracking services
- No third-party scripts: No tracking pixels, social media widgets, or advertising networks
Sharing Your Data
You control sharing:
- Share Button: Generates a URL with your timer configuration or results encoded in the URL parameters
- Export Features: CSV/JSON exports save files directly to your device
- No automatic sharing: We never automatically share your data with anyone
When you use the share button, timer state is encoded in the URL (e.g., ?time=125300&laps=45,48,47). Anyone with the link can see the encoded data. This is intentional - you're choosing to share your results.
Your Rights
Since all data is stored locally in your browser:
- Access: View your data anytime in the History section
- Export: Export your history to CSV/JSON at any time
- Delete: Clear your history with one click
- Control: You have complete control - we have no access
Children's Privacy
StopwatchPro does not collect any personal information from anyone, including children under 13.
Technical Details
Data Storage Technology:
- IndexedDB for timing sessions and history
- localStorage for user preferences
- No server-side databases
- No cloud synchronization
Data Security:
- Your browser's built-in security protects your data
- Data stays on your device behind your browser's security model
- No transmission of personal data to external servers
Summary
StopwatchPro is a client-side web application. All your timing data, history, and preferences stay in your browser. We don't collect, store, or transmit your personal information. You have complete control and ownership of your data.