A calm monthly guide for period timing, ovulation, and cycle planning
Daily Safety Signal
Stage
Not given
Not given
Founded
Not given
Not given
Based in
Not given
DE
Pricing model
Free
Freemium
Pricing
Not given
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
Next period forecast with estimated date and timing
Ovulation date estimation
Fertile window calculation
Adjustable cycle length and period length
Bilingual interface in English and Chinese
Planning tools for travel, workouts, and routines
Late period calculator tool
Irregular period cycle calculator
Body tracking and notes capability
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
Calm, gentle interface designed for ease and regular return visits
Comprehensive monthly view showing period, ovulation, and fertile window in one place
Educational planning tool paired with guidance to seek medical care when needed
Support for irregular cycles with range view
Practical focus on dates and timing people need most for planning
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
Lunio