Last updated: May 9, 2026
Simple Sleep Tracker stores all your sleep data locally in your browser using localStorage. We do not transmit, collect, or store your sleep data on any external server.
We collect no personal information. Sleep entries, notes, and settings are stored entirely on your device and never leave it. We do not use analytics, tracking, or advertising.
If you enable reminders, we request browser notification permission. This permission is stored locally and can be revoked at any time in your browser settings.
We do not integrate with any third-party analytics, advertising, or tracking services. Apple Health sample imports in this web build are generated locally on-device for demonstration purposes only.
You can delete all your data at any time from Settings → Clear all sleep data. Clearing browser storage will also remove all app data.
For privacy questions, please contact us through the app's support page.