Cycle tracking that respects you — and your data.

Privacy-first, science-based period tracking for everyone who menstruates. Explainable predictions, symptom logging in your own words, and honest guidance that never causes anxiety.

🔒 On-device first 🧪 Evidence-graded content 🏳️‍🌈 Inclusive by design Working offline
Download on the App Store

Why Lunara

Predictions you can trust — because you can see how they're made

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Explainable predictions

Every forecast shows its basis ("based on your last 6 cycles, average 30 days") with a ± day range. Never a single fake-precise date.

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Log by talking

Type "cramps, feeling low, big clots" — Lunara structures it into tagged symptoms with severity, and keeps your original words.

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Red-flag awareness

Evidence-based warnings (ACOG guidelines) when your pattern warrants a doctor's visit — without medical panic.

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Insights that teach

Correlations between symptoms and cycle phases, with evidence grades on every lifestyle suggestion.

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BBT & LH support

Basal temperature curves with automatic shift detection, and LH test logging for ovulation confirmation.

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Gentle by default

Calm notifications, luteal-phase breathing exercises, and PMS support that helps rather than alarms.

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Privacy foundation

Your health data never leaves your phone unless you say so

  • All records stored on-device with iOS data protection — no account required
  • Cloud AI is off by default; when enabled, only your current question is sent, never your records
  • No ads, no tracking SDKs, no data brokers — export or delete everything in one tap

Get started

Free to start, honest about what's premium

Cycle tracking, predictions, symptom logging, calendar, HealthKit integration and data export are free forever. Lunara+ unlocks unlimited natural-language logging, advanced insights and premium themes.

Download on the App Store

Lunara is a health and wellness tool, not a medical device. It does not provide diagnosis, treatment, or medication advice. Always consult a qualified healthcare professional for medical concerns.