About
Flo is a science-backed period tracker and fertility app used by over 460 million women worldwide. It supports tracking regular or irregular periods, ovulation predictions, basal body temperature, pregnancy week-by-week, and perimenopause symptoms. Log 70+ symptoms and moods to receive personalized menstrual cycle insights, access fertile window predictions, and share cycle summaries with your doctor. The app includes Anonymous Mode for privacy, dual ISO 27001 certification, Flo for Partners to share updates with your partner, and Secret Chats to connect with other users. Premium features unlock daily personalized insights, expert-led video courses on fertility and pregnancy, a symptom checker for PCOS and endometriosis, and 24/7 virtual health assistant support.
Highlights
- Log 70+ symptoms and moods for personalized menstrual cycle insights
- Fertile window and ovulation predictions based on period data and basal body temperature tracking
- Week-by-week pregnancy tracking with visuals and expert-reviewed content
- Anonymous Mode and dual ISO 27001 certification for data security
- Flo for Partners to share cycle predictions and pregnancy progress with control over what you share
- Perimenopause Score to track symptom changes in sleep, energy, mood, and well-being
Best for
Women tracking regular or irregular periods, those trying to conceive seeking ovulation and fertility insights, pregnant users following week-by-week development, teens navigating their first period, and those managing perimenopause symptoms.
At a glance
Flo Cycle & Period Tracker is rated 4.8 out of 5 from 1,666,931 ratings and is available on iOS and Android — all free to download.
It is developed by FLO HEALTH UK LIMITED.
Screenshots
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