Luma: Private Period Tracker

Luma is a private period tracker and symptom diary for adults. It works offline, needs no account, and keeps your diary encrypted on your device. Record what happened, keep your history together, and choose what to share. QUICK DAILY LOGGING Record bleeding, spotting, period starts, pain, mood, symptoms and daily impact. Add an optional note. Choose your favorite symptoms for faster logging. YOUR HISTORY, AS YOU RECORDED IT Tap a calendar day to add or edit an entry. See observed intervals between recorded period starts, including long gaps. Unlogged days stay unknown. Luma does not predict your next period, ovulation or fertile days. It is a period diary that shows only what you wrote down. REPORTS YOU CONTROL Save a PDF or CSV for a date range you choose. Personal notes are excluded by default. Preview your records before exporting and share a PDF using your phone's share menu. PRIVATE BY DESIGN Luma is built as a private period tracker: your diary is encrypted on your device. There is no account and no subscription, and your diary works offline. An optional device screen lock protects returning to the app. Optional reminders use discreet wording without health details. ADS AND YOUR DATA Luma contains a banner in Settings and occasional interstitial ads after viewing reports. Ads use internet access and advertising-related device data; diary records are never supplied to advertisers. Available ad privacy choices can be reviewed in Settings. BACK UP YOUR DIARY Save an encrypted, password-protected backup to a location you choose. Review dates and conflicts before importing. Luma also imports its own CSV format; other apps' exports need conversion first. Keep your backup password safe: it cannot be recovered. Uninstalling the app or losing your phone can lose your diary without a separate backup. MADE FOR EVERYDAY USE Four clear screens, system dark mode, scalable text and layouts for phones and tablets. English interface. Android 8.0 or later. QUESTIONS PEOPLE ASK Is there a private period tracker that works without an account? Yes. Luma needs no account or subscription, the diary works offline, and it is encrypted on your device. Does Luma predict my next period or ovulation? No. Luma does not predict your next period, ovulation or fertile days. It shows the observed intervals between the period starts you recorded. Where is my period data stored? In an encrypted diary on your device. Diary records are never supplied to advertisers. Can I export my period and symptom history? Yes. You can save a PDF or CSV for a date range you choose and share a PDF from your phone's share menu. Personal notes are excluded by default. What happens to my diary if I change or lose my phone? Without a separate backup the diary can be lost. Save an encrypted, password-protected backup to a location you choose, and keep the password safe because it cannot be recovered. Does this offline period tracker show ads? Yes. There is a banner in Settings and an occasional interstitial ad after viewing reports. Ads use internet access; the diary itself works offline. Luma is a diary, not a medical device. It does not diagnose, treat, cure or prevent any medical condition and is not a contraceptive method. Consult a qualified healthcare professional about symptoms that concern you. PDF and CSV exports are readable by recipients. Only share with people and apps you trust. Reminder delivery is approximate and depends on your device settings.

Private daily logging, calendar, reports and encrypted backups. Added a Settings banner, occasional interstitial ads after reports, and ad privacy choices. Diary records remain on your device.