Lune Line Cycle Tracker
Moon to Moon Menstrual Tracker
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Track your cycle, share your calendar with people you trust, and chat privately with connected partners – all in one secure space.
Lune Line is a private space for tracking your cycle and sharing what matters with people you trust.
Log your period, follow updated predictions, and stay prepared with timely reminders. When you choose to connect with a partner, you can securely share your calendar, view calendars shared with you, and chat in one place.
What you can do:
• Track period dates
• See your cycle day and estimated cycle stage
• View predicted upcoming period dates that update as you log
• Get reminders before your expected period and a check-in if you haven’t logged it
• Share your calendar with people you choose
• View calendars shared with you
• Chat privately with connected partners
• Manage sharing and access at any time
• Add an optional PIN to protect access on your device
Optional shop:
• Browse period care, hygiene, comfort, and relationship products for individuals and couples
Important:
Lune Line provides tracking tools and cycle estimates. It does not provide medical advice and should not be used for contraception or pregnancy prevention. If you have health concerns, consult a qualified healthcare professional.
Ratings & Reviews
• Calendar sharing is here: share your cycle calendar with a partner when you choose.
• Request access to a partner’s shared calendar using an invite code.
• Manage connections in one place: approve requests, stop sharing, or disconnect anytime.
• Boosting on-device privacy and security – your cycle data and PIN are now encrypted at rest, with hardened network protection throughout the app.
• Added UI translations to Spanish and Russian.
• Minor fixes and stability improvements.
The developer, Sexology Systems LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SEXOLOGY SYSTEMS LLC
- Size
- 79.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Russian, Spanish
- Age Rating
18+
- 18+
- Copyright
- © 2026 SEXOLOGY Systems