Free plan includes daily signal reminders and email notifications to up to 3 contacts. Paid plans add SMS notifications, Timer feature, and support for up to 10 email contacts and 1–5 SMS contacts.
Key features
Record health events, observations, measurements and reports
Select and share only what's needed
No accounts or servers required
Plain text files in Org Mode format
Sync only if you decide to, using tools you trust
Daily check-in reminders
Automatic email and SMS alerts to emergency contacts
60-minute grace period after missed check-in
Safety Timer for time-limited activities
Support for multiple emergency contacts
No location tracking or GPS
Pause signals anytime
Contact invitation and confirmation system
EU data storage on Google Firebase
What makes it different
On-device by default with no analytics or profiteering from health data
Files you own in standard Org Mode format that you can inspect, back up or migrate
Cross-platform plain text storage fully under your control
Works automatically without requiring you to take action in an emergency
No GPS tracking or privacy invasion
Contacts don't need to install an app to receive alerts
Designed for daily passive safety, not acute emergencies
Harp
Lunio