Focusera respects your privacy:

• All data is stored locally on your device using browser storage
• No personal information is collected or transmitted to external servers
• No analytics or tracking services are used
• No account registration required
• Your browsing history and blocked site data never leave your browser

This extension only requires permissions necessary for its core functionality:
- Storage: Save your settings and progress locally
- Tabs: Detect when you visit blocked sites
- Alarms: Timer notifications
- Notifications: Alert you when sessions end
- DeclarativeNetRequest: Block distracting websites

Source code is available for review.