sleep-scroll

Privacy Policy — sleep-scroll

Last updated: March 2026

Summary

sleep-scroll collects no personal data and sends no data to any server. Everything stays on your device.

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What data is stored

sleep-scroll stores the following data locally on your device using Chrome’s chrome.storage.local API:

Data	Purpose
Sleep mode state (active, start time, duration, phase)	Running the active sleep session
Wind-down style preference	Personalising the phase 4 wind-down screen
Schedule settings (time, duration, enabled)	Auto-starting sleep mode at your chosen time
Intensity mode (normal / strict)	Controlling overlay dismiss behaviour
Target sites list	Remembering which sites you’ve enabled
Session history (date, start/end time, duration, completed)	Showing your sleep analytics

This data never leaves your device. It is not transmitted to any server, not shared with any third party, and not accessible to the extension developer.

What data is NOT collected

• No account or sign-in required
• No name, email address, or any personal identifier
• No browsing history beyond detecting which enabled social media sites are open during an active session
• No location data
• No payment information
• No analytics or crash reporting sent to any external service

Permissions used

Permission	Why it’s needed
storage	Save your preferences and session history locally
alarms	Trigger the scheduled nightly sleep mode and phase tick
tabs	Detect when a social media tab is open to send it phase updates
Host permissions (social media sites)	Inject the overlay content script into those pages

Data retention

All locally stored data can be cleared at any time by:

• Uninstalling the extension (Chrome removes all extension storage)
• Going to chrome://extensions → sleep-scroll → Details → Clear storage

Changes to this policy

If this policy changes materially, the version date above will be updated.

Contact

For questions, open an issue at the project’s GitHub repository.