LunaCycle01
Cycle tracking
Log period days, flow, symptoms, emotions, notes, and review your cycle history and estimates.
Release candidate
Your cycle data should belong to you.
LunaCycle combines cycle tracking, reminders, Care Circle support, LunaLearn, and athletic context in a local-first app designed around privacy.
LunaCycle
Your cycle overview
Next period estimate
About 16 daysToday
Log symptoms, mood, flow, or notesPrivacy
Stored locally on this deviceDesigned for real life
More than a calendar.
LunaCycle brings tracking, support, learning, reminders, and performance context together without requiring a LunaCycle cloud account.
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Care Circle
Support authorized dependent profiles while preserving profile-scoped privacy boundaries and limited summary access.
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LunaLearn
Browse age-aware educational content and supporter-focused guidance with audience rules applied first.
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Athletic context
Track workouts, recovery, body measurements, and cycle-related patterns alongside training information.
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Local reminders
Create privacy-conscious reminders that stay local to the profile and follow your notification settings.
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Health integrations
Optional Apple Health and Android Health Connect access is permission-based and limited to supported release capabilities.
Privacy is an architecture choice.
LunaCycle uses an encrypted SQLCipher-backed local database, device secure credential storage, no advertising SDK, and no production behavioral analytics service transmitting personal health data off-device.
Important
For tracking and education — not medical diagnosis.
LunaCycle is for informational, educational, tracking, and support purposes. Cycle and fertility-related predictions are estimates and should not be used as a contraceptive method.