By AppHub Editorial Team · Updated August 3, 2026
Flo Ovulation & Period Tracker
Overview
Health & Fitness
Flo Health Inc.
Free
Apr 12, 2016
$0.99 - $99.99 per item
No
Feb 26, 2026
Features
Welcome to Flo! The world’s leading period, pregnancy, and cycle tracker. Join over 430 million members who use Flo as their go-to pregnancy & ovulation tracker & cycle calendar. With seven million five-star ratings, we're paving the way to better female healthcare by empowering people with periods to harness their body's signals.
Flo for Partners Link your Flo account with your partner so they can see updates on your cycle and pregnancy. Period and fertile days predictions, we'll provide them ...
Welcome to Flo! The world’s leading period, pregnancy, and cycle tracker. Join over 430 million members who use Flo as their go-to pregnancy & ovulation tracker & cycle calendar. With seven million five-star ratings, we're paving the way to better female healthcare by empowering people with periods to harness their body's signals. Flo for PartnersLink your Flo account with your partner so they can see updates on your cycle and pregnancy. Period and fertile days predictions, we'll provide them with insights and actions they can take to support you better. Use Flo for Partners to maximize your connection when tracking your period, ovulation, or pregnancy. There's more to tracking your period:
Download Flo Ovulation & Period Tracker
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Ratings breakdown
4,780,000 reviewsDeveloper contact
Name
Flo Health, Inc.
Address
1013 Centre Rd Ste 403B Wilmington, DE 19805 United States
Website
https://flo.health/Phone
+1 855-694-8157
Support
support@flo.health
Privacy
View policyFrequently Asked Questions
Is Flo free to use? high
Flo is free to download and offers basic period tracking. However, many advanced features (such as detailed pregnancy tracking, extensive symptom tracking, and personalized insights) require a paid subscription. Recent user reviews indicate frustration that features previously free are now behind a paywall.
Source: user_reviews, app_metadata
Can I lose my data if I switch phones? low
At least one recent reviewer reports losing all data when switching phones even when using the same login. Flo does offer an Anonymous Mode for privacy, but this may affect data transfer across devices. It is recommended to back up or sync data properly before switching devices.
Source: user_reviews
Is Flo suitable for teenagers? low
The app has an 'Everyone' content rating on Google Play, but one recent reviewer notes that it contains 'explicit material that goes beyond simply educational content' and would not recommend it for younger daughters. Parental discretion is advised.
Source: user_reviews, app_metadata
Does Flo help with pregnancy tracking? medium
Yes, Flo includes a dedicated pregnancy tracker with expert information. However, recent reviews indicate that detailed pregnancy features (like baby size comparisons) are now locked behind a subscription, whereas previously they were free.
Source: user_reviews, app_metadata
How to Use
Flo is a period, ovulation, and pregnancy tracking app that uses cycle logs and user input to provide predictions, health insights, and personalized content. (app_description)
Getting Started
Source: app_description_and_user_feedback_noted
- Download Flo from Google Play and create an account using your email or via Anonymous Mode for enhanced privacy.
- Log your first period start date, cycle length, and any symptoms (flow, mood, cramps) to calibrate the tracker.
- Set up personalized reminders for period start, ovulation window, birth control, and water intake from the Settings menu.
- Explore the Content Library for articles and videos on women's health, but note that some content may be locked behind a subscription.
- If you switch phones, ensure data sync is enabled before changing devices, as some users report data loss when using the same login on a new device.
Key Features (from app listing)
Source: app_description
- Period and cycle tracking with symptom logging (vaginal discharge, mood swings, cramps).
- Ovulation and fertile window predictions based on cycle data.
- Pregnancy tracker with weekly updates and expert articles.
- New perimenopause support with symptom checker (not available in UK/EU/EEA).
- Anonymous Mode to keep health data separate from personal identifiers.
- Secret Chats community for discussing intimate health topics.
- Health Assistant virtual chatbot for answering questions on late periods, irregular cycles, etc.
- Wear OS compatibility with tiles and complications for cycle insights.
- FSA/HSA eligible subscription for US users.
This tip is responsive to a verified user complaint from recent_reviews #2, which reported data vanishing after changing phones despite using the same login.
How this content was created
Content type: pattern_analysis_of_user_reviews_and_metadata
AI generated: Yes
- Google Play user reviews (5 per app), September 14, 2024 – October 13, 2025
- Google Play ratings distribution
- App Store listing metadata
- Only 5 recent reviews were available; no high-engagement or mixed review samples were provided.
- Claims labeled 'high confidence' are based on 3 of 5 reviews, but the overall sample is small.
- Claims labeled 'low confidence' are based on single-review observations only.
- No real-world app testing was conducted.
- Feature availability may vary by region, device, and app version.
- The app's overall high rating (4.7) suggests that the recent complaints may not represent the majority of users, who may be satisfied with the free or premium experience.
Pros & Cons
Based on analysis of Google Play user reviews
Pros
- Accurate period and ovulation tracking that adjusts to changes in the user's cycle.
Theme 'Accurate tracking' identified in recent_review #3 and #5
Evidence (2)
“I loved this app, it was accurate and it allowed me to track my periods as well as my ovulation dates”Rating: 2★ September 14, 2024 185 likes“Incredibly useful for tracking periods, as it adjusts to changes.”Rating: 4★ March 17, 2025 138 likes - Helpful for monitoring health abnormalities and irregularities in menstrual cycles.
Theme 'Health monitoring' identified in recent_review #3
Evidence (1)
“allowed me to monitor any abnormalities and as someone who has always had very irregular periods it was great.”Rating: 2★ September 14, 2024 185 likes - Provides expert insights and tailored content for pregnancy and fertility.
Theme 'Expert content' identified in app description and supported by recent_review #1 (negative context)
Evidence (1)
“It used to show you how big your baby was, where they are developmentally, and give you tips on what to expect. Now, anything you click on prompts you to pay for a subscription.”Rating: 1★ October 13, 2025 297 likes
Cons
- Many features that were previously free are now locked behind a subscription paywall.
Theme 'Paywall for features' identified in recent_review #1, #3, and #4
Evidence (3)
“Literally everything else is behind the paywall. It used to show you how big your baby was, where they are developmentally, and give you tips on what to expect.”Rating: 1★ October 13, 2025 297 likes“However now they want me to pay for all the things that made it great and I can no longer monitor for any issues like I used to without paying?!”Rating: 2★ September 14, 2024 185 likes“over time, more and more features have been locked behind a paywall and I got very annoyed at the pop-ups telling me to buy a plan.”Rating: 2★ June 06, 2025 129 likes - Annoying and frequent pop-ups prompting users to purchase a subscription plan.
Theme 'Subscription pop-ups' identified in recent_review #1 and #4
Evidence (2)
“anything you click on prompts you to pay for a subscription.”Rating: 1★ October 13, 2025 297 likes“I got very annoyed at the pop-ups telling me to buy a plan.”Rating: 2★ June 06, 2025 129 likes - Data may be lost when switching phones, even when using the same login credentials.
Theme 'Data loss on phone change' identified in recent_review #2
Evidence (1)
“even if you use the same log in, changing phones will cause all your data to disappear!!!! I was devastated to say the least when my app showed I was logged in but all my menstrual history was gone on my new phone.”Rating: 3★ September 23, 2025 133 likes
Recent Reviews
Laura Palko
1★This app used to be fantastic. I used it for tracking my first 3 pregnancies and always recommended it to people. But that is not the case any longer. The only thing it shows now is how far along you are. Literally everything else is behind the paywall. It used to show you how big your baby was, where they are developmentally, and give you tips on what to expect. Now, anything you click on prompts you to pay for a subscription. It's ridiculous and I will be deleting the app.
Kat Moore
3★Great app for adults. There's a lot of explicit material that goes beyond simply educational content, so I wouldn't feel comfortable with my daughters using the app until they were much older. Also, even if you use the same log in, changing phones will cause all your data to disappear!!!! I was devastated to say the least when my app showed I was logged in but all my menstrual history was gone on my new phone. Be warned!
Alex Clark
2★I loved this app, it was accurate and it allowed me to track my periods as well as my ovulation dates AND allowed me to monitor any abnormalities and as someone who has always had very irregular periods it was great. However now they want me to pay for all the things that made it great and I can no longer monitor for any issues like I used to without paying?! As women we are already nickel and dimed for items like pads and I might as well just go back to using a calendar if all I get is tracking
Elena Paltz
2★I've had this app for about 5 years and really just used it to track my periods, which it is decent for. But over time, more and more features have been locked behind a paywall and I got very annoyed at the pop-ups telling me to buy a plan. The final straw was a bug that kept putting my symptoms on one day and my flow on the next, despite logging both on the same day. I just don't see the point in continuing to use an annoying and buggy app. I plan on tracking my periods on paper now.
W D
4★Incredibly useful for tracking periods, as it adjusts to changes. I wish we could turn off, or skip parts of, the bot chat stuff. Its programming/information is too general and ultimately restrictive. I also would like more symptom options, even just an add your own that you can select again as needed. Thanks for the app!