Luna Log

Luna Log is a privacy-first period and symptom tracker that keeps all your data on your device. No accounts, no ads, no tracking. Works fully offline.

Track your cycle, symptoms, basal body temperature, and cervical mucus. Get personalized insights, cycle predictions, and fertility window estimates based on your own data, not generic averages.

Features:
• Period and cycle tracking with multi-cycle predictions
• 30+ customizable symptoms with pain tracking
• Basal body temperature (BBT) charting with thermal shift detection
• Cervical mucus tracking
• Fertility window estimates (BBT + CM fusion)
• 5-tab Insights: cycles, fertility, symptoms, patterns
• Animated charts and trend analysis
• 8 beautiful themes with dark mode
• CSV, PDF export and cloud backup (to a folder you control)
• Home screen widget (6 sizes)
• Biometric app lock
• Daily reminder notifications
• 11 languages: English, German, Spanish, French, Italian, Portuguese, Turkish, Chinese, Japanese, Korean, Persian

No data leaves your device unless you choose to back it up.

Your body, your data, your device.