Luna Log

Luna Log is a free period and symptom tracker for people who want to keep their health data private.

Your data stays on your device. Luna Log has no internet permission, uses no ads, no analytics, and no tracking.

All features are free. If Google Play shows in-app purchases, they are only optional donations to support further development. They do not unlock anything.

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PRIVATE BY DESIGN
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• All data stays locally on your device
• AES-256 encryption
• No internet permission
• No ads
• No analytics
• No tracking
• No cloud
• No sharing of your health data

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CYCLE & PERIOD TRACKING
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• Period tracking
• Flow intensity, color, and clots
• Cycle predictions
• Regularity rating
• Fertile window estimate
• Calendar method combined with basal body temperature

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BODY SIGNS & SYMPTOMS
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• Basal body temperature chart
• Temperature rise detection
• Cervical mucus tracking
• Cervix tracking
• Customizable symptom catalog
• Emoji icons for symptoms
• Daily insights based on rule-based analysis
• No AI, no cloud processing

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REPORTS & DATA
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• PDF cycle reports for doctor visits
• Full data export
• CSV-Zip import and export
• You stay in control of your data

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COMFORT FEATURES
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• 12 languages
• 8 color themes
• Dark mode
• Home screen widget
• Daily reminders
• Biometric app lock with fingerprint or face unlock

Supported languages:
German, English, Spanish, Persian, French, Italian, Japanese, Korean, Portuguese (Brazil), Turkish, Simplified Chinese, and Traditional Chinese.

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FREE, WITHOUT A PAYWALL
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Luna Log is free to use.

There is:
• no subscription
• no advertising
• no premium version
• no paid features
• no hidden unlocks

Optional in-app purchases are donations only. They do not change the app and do not unlock any features.

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PRIVACY GUARANTEE
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Luna Log does not request internet permission.

Your cycle data never leaves your phone.

Period.