ToSleep AI is the sleep companion described on tosleep.ai. You may see the name Tonight in current app builds. For questions about this notice or your data, contact support@tosleep.ai.
Records on your devices
The Watch can record wrist movement and heart-rate information during a monitoring session. Raw recording archives and supplementary Health samples are stored on your devices and can be transferred from the Watch to its paired phone.
With permission, the app reads available sleep records, heart rate, heart-rate variability, heartbeat series, respiratory rate, blood oxygen and sleeping wrist temperature. Which readings appear depends on the samples available and access granted.
Morning feedback saved with the current phone feedback form, including its optional note, is stored locally. This is separate from night-record cloud syncing.
When you sign in
The app can sync night records to its service. These records include timing, estimated stage sequences, wake information, data-coverage information and compact per-period features derived from movement and heart rate when available. They are more detailed than a single total for the night.
Summary comparisons with Health stage labels can also be sent. This is different from uploading the local raw Health archive.
Account data may include the identifier returned by an enabled sign-in provider, the name you choose, and onboarding preferences. The service uses Cloudflare Workers and D1 for its account and record functions. Available sign-in options depend on the build and configuration.
When you ask AI
A weekly review sends selected summary metrics through the app service to Google's Gemini API. A chat sends summary context and the conversation text you provide.
If you type personal information into a conversation, that information becomes part of the request. You do not need to include passwords, API keys or identifying details to ask about your sleep.
The current AI requests do not attach the complete raw sensor archive. Night-record syncing is a separate data flow. AI requests are not the source of the Watch's live wake decisions.
Family sharing
When you invite someone and they accept, or you accept their invitation, the linked accounts can see selected information from each other's most recent night. This can include duration, estimated onset and cycles; a morning feeling is shown only if available to the service. It is not a live sensor feed.
Either person can end the link in the app. Do not assume that a missing field means the other person had a normal or abnormal night.
Your controls
- Permissions: review the data permissions you grant and change them through your device settings.
- Export: the night-record export includes stored night records and stage comparisons. Raw sensor archives and other local files are separate; do not assume one export contains every category.
- Local deletion: local night-record deletion acts on the phone's stored night records and comparisons. It does not itself remove the Watch's copies or the cloud account.
- Account deletion: the app has a separate account deletion request for records associated with the account in the service. Contact support if it fails or you need help with the scope of deletion.
- Sharing: removing a family link ends that relationship in the service.
Signing out is different from deleting data. Device copies and records in a signed-in account may remain until you use the relevant deletion controls.
This website
Optional website analytics
On the public website, Google Analytics loads only after you choose Allow analytics. It measures page visits, referral sources and general device information using analytics cookies. This website measurement is not added to the app, account dashboard or authenticated API and does not send sleep records or health data.
You can decline or reopen Cookie settings to change your choice. The script removes query strings and fragments from page addresses it sends, disables advertising personalization, and honors Global Privacy Control and Do Not Track. Your preference is saved locally in your browser.
Learn how Google uses information from sites that use its services.
The interactive time preview changes only the example on the page: it does not create an alarm, connect to your app account or send your chosen time to the sleep service.
Contact buttons open your email application. Sending an email shares the information you include with the recipient; clicking the button alone does not subscribe you to notifications.
The site hosting service processes requests needed to deliver pages. Access to a private review copy may also involve the hosting service's sign-in controls.
Questions or requests
Contact support@tosleep.ai for help with your records or account. Include enough information to describe the request, but do not send a full health archive unless a specific need has been explained.
This notice describes the current testing app and this website version. Review the notice supplied with a later release for changes to features or data handling.