Flo Ovulation & Period Tracker: Track Cycles

Flo Ovulation & Period Tracker is a health and fitness application developed by Flo Health Inc. that records menstrual cycle data and generates predictions for periods, ovulation, and related symptoms. It is published as a free download and has been available since April 12, 2016, with the most recent update dated October 7, 2026.

The app centers on logging cycle information and turning those entries into forecasts and summaries. A calendar-based system supports regular and irregular periods, and users can record more than 70 symptoms and moods to build a personal history over time. Predictions for the fertile window and ovulation are derived from the period data that has been entered, and basal body temperature can be logged as an additional input.

Beyond cycle tracking, Flo covers pregnancy with week-by-week updates, visuals, and checklists, and offers tools for exploring perimenopause, including a Perimenopause Score, a Menopause Timeline, and logging of changes in sleep, energy, and mood. The app has accumulated more than 570 million downloads worldwide and holds a rating of 4.72 from over 5.1 million ratings. It requires Android 10 or later, has no ads, and includes optional in-app purchases for premium content. It is an informational tool rather than a medical device, and the developer states that it does not provide diagnosis or treatment and is not a method of birth control or conception aid.

Key features

• Cycle tracking for regular and irregular periods, with support for pre-period symptoms and cycle changes
• Ovulation and fertile window predictions generated from logged period data
• Over 70 trackable symptoms and moods for personalized cycle insights
• Basal body temperature (BBT) logging
• Pregnancy tracking with weekly updates, visuals, diagrams, and checklists
• Perimenopause Score and Menopause Timeline, plus a tracker for sleep, energy, mood, and well-being
• Anonymous Mode that works without linking a name, email, or personal identifiers
• Secret Chats for connecting with other members and sharing experiences
• Wear OS 3 support through tiles and complications for cycle insights
• Shareable summaries intended to be taken to a doctor's appointment

How to install

1. Tap the download button on this page to get the APK file.
2. If Android asks for permission, allow your browser or file manager to install apps by enabling the Install unknown apps setting for that source.
3. Open the downloaded APK file from your notifications or file manager. The file size is not available in the app information shown here.
4. Tap Install and wait for the process to finish.
5. Open the app once installation completes. Note that it requires Android 10 or higher, and a Wi-Fi connection may be used for some features.

Fresh Updates

The latest update for Flo focuses on technical improvements to enhance app performance and overall stability. This release is designed to make your tracking experience smoother and more reliable. Thank you for your continued support!

It suits people who want to record their menstrual cycle and review patterns over time, including those with irregular periods or pre-period symptoms. It also serves users who are trying to conceive and want to log basal body temperature and follow fertile-window predictions, as well as people tracking pregnancy week by week or exploring perimenopause symptoms. Anyone looking for a simple calendar replacement with more detail may find the logging options useful, while those seeking medical diagnosis or a contraceptive method should look elsewhere.

Log entries consistently, since predictions and summaries depend on the data you enter. Review the symptom and mood history before a medical appointment to make the shareable summaries more useful. If privacy is a priority, enable Anonymous Mode so the tracker works without personal identifiers. Keep in mind that the app does not provide medical advice, diagnosis, or treatment, and consult a qualified health care professional for health decisions.

Flo Ovulation & Period Tracker combines cycle, ovulation, pregnancy, and perimenopause tools in a single free app with no ads and optional premium content. With Android 10 or higher required, it offers extensive logging and prediction features for anyone who wants to understand their cycle data over time. It is an educational and informational resource, not a substitute for professional medical care.