Creval Digital Studio ยท Updated 7 November 2026
Dayline shares check-ins with one trusted contact you invite. It does not require an email account, phone number, location, contacts, photos or advertising identifier.
Your chosen display name, interval, last check-in, deadline, recent missed deadlines, hashed connection credentials and a notification delivery token. Your trusted contact sees your display name and check-in status. Treat invitations as private: whoever accepts a valid invitation can view that circle.
Cloudflare hosts the service and database. Firebase Cloud Messaging delivers notices using an installation identifier and notification token. These providers process technical information such as IP addresses to operate their services. Dayline uses temporary hashed network keys for abuse prevention. No advertising or analytics SDK is included.
Close your circle in Settings to delete its service records and disconnect your contact. Leaving as a contact removes that connection and its notification registration. Replacing an invitation revokes the previous contact. Missed-deadline and delivery records expire after 30 days. Circles unused for 90 days are deleted. Invitations expire after seven days. Temporary rate-limit keys are cleaned after their short limit window. Provider backups may retain deleted records for their normal backup cycle.
For deletion instructions or a request outside the app, visit Delete your Dayline data.
The app stores connection credentials, your selected appearance and the last fetched status privately. App data is excluded from Android cloud backups and device transfer. Uninstalling removes the local data but does not itself delete service records. Close your circle first to delete it immediately.
You can manually copy a private recovery code from Settings and use it to reopen your existing role after reinstalling or changing phones. Anyone with that code can access the role, so keep it private. This manual copy does not enable Android cloud backups.
Notification permission is optional and can be changed in Android Settings. Network loss, battery restrictions, force-stopping, service failures or free-tier limits can delay or prevent notices. Dayline does not contact emergency services.