# Lilly Tracker — Period & Ovulation Tracker > Lilly Tracker is a menstrual cycle and health tracking app for Android (10M+ downloads, 4.8★, 178K reviews). It logs periods, predicts ovulation, tracks basal body temperature, symptoms, moods, and birth control. PIN-protected, free cloud backup, PDF export. Privacy-first, no health data sold. Developed by SMSROBOT LTD. ## Key Pages - [Period and Ovulation Tracker Lilly on Google Play](https://play.google.com/store/apps/details?id=com.smsrobot.period) - [Privacy Policy - Lilly Tracker](https://www.menstrualcycle.app/privacy.html) - [Developer: SMSROBOT LTD](https://www.smsrobot.com) - [Lilly Tracker Home - Full Feature Overview](https://www.menstrualcycle.app/) - [Comprehensive Feature Breakdown](https://www.menstrualcycle.app/features.html) - [Frequently Asked Questions](https://www.menstrualcycle.app/faq.html) ## Key Features - Period & ovulation tracking with fertile window calculation - BBT logging with line and bar chart views - Symptom and mood tracking (30+ symptoms, 40+ moods) - Birth control tracking (pill, patch, ring) with reminders - PIN-code privacy lock and free encrypted cloud backup - PDF export for doctors and home screen widget - Girl Talk community forum - Works offline, 9 themes, 20+ languages - Android 6.0 through 15 supported ## FAQ - **What does Lilly Tracker do?** Period and ovulation tracker with BBT, symptoms, moods, birth control reminders, PIN lock, cloud backup, PDF export, and community forum. - **Is my data private?** Yes — PIN-protected, encrypted in transit, never sold or shared. - **How accurate is period prediction?** Uses your logged history with optional auto-calculation from actual cycles. - **Does Lilly have a community?** Yes — Girl Talk forum for periods, PCOS, fertility, and women's health. - **Is the app free?** Yes, free with ads. One-time purchase removes ads permanently. - **Can I back up my data?** Yes — free encrypted cloud backup synced across devices. - **Can I export data for my doctor?** Yes — PDF export via Cycle Stream. - **What birth control methods are supported?** Pill, patch, and ring — customizable schedules. - **Does the app work offline?** Yes. Internet only for backup, forum, ads, and purchases. - **What Android versions are supported?** Android 6.0 through 15. ## Data - **Downloads:** 10M+ | **Rating:** 4.8★ (178K reviews) - **Developer:** SMSROBOT LTD, Dublin, Ireland (Reg. 522641) - **Last updated:** May 14, 2026