Verithiathe honest score on any app
Updated July 2026 · real, multi-region App Store reviews
Head-to-head

Period Tracker Period Calendar vs Flo Cycle & Period Tracker

Period Tracker Period Calendar 4.9★ · Free + IAP 75
Winner Period Tracker Period Calendar
Flo Cycle & Period Tracker 4.7★ · Free + IAP 60

While both apps offer effective period tracking, Period Tracker Period Calendar is a better choice for users seeking a more straightforward, free experience, whereas Flo Cycle & Period Tracker, despite its comprehensive features, is heavily criticized for its aggressive premium subscription model.

Full reviews: Period Tracker Period Calendar · Flo Cycle & Period Tracker

Period Tracker Period Calendar is praised for its accuracy and ease of use, particularly for younger users, though some recent reviews highlight issues with hidden charges and ads. Flo Cycle & Period Tracker, while also accurate and feature-rich, faces significant user frustration due to its aggressive push for paid subscriptions and locking essential features behind a paywall.

Head to head

Features and Accuracy edge: Period Tracker Period CalendarR8R55R57R47
Period Tracker Period Calendar Users consistently praise Period Tracker Period Calendar for its accuracy in predicting periods and ovulation R8R55R57. It offers features like symptom logging, cramp relief tips, and even breast exam tutorials R47. Some users appreciate the partner sharing feature . However, some users report issues with custom tag searches and a lack of custom symptom/mood options .
Flo Cycle & Period Tracker Flo Cycle & Period Tracker is also lauded for its accuracy in tracking periods and predicting fertile windows, with some users crediting it for helping them conceive . It offers symptom tracking, pregnancy tracking, and community features . However, many users express frustration that advanced features, insights, and educational content are locked behind a premium subscription R61R71R75.
Ease of Use edge: Period Tracker Period CalendarR17R20R60R27
Period Tracker Period Calendar Many users find Period Tracker Period Calendar practical, easy to use, and straightforward R17R20R60. It is recommended for younger users due to its clear interface and helpful tips R27. However, some recent reviews mention the app becoming confusing after updates .
Flo Cycle & Period Tracker Flo Cycle & Period Tracker generally has a clean interface and is intuitive for tracking . However, the constant pop-ups and aggressive subscription prompts make the user experience frustrating for many, hindering ease of use .
Reliability and Support tieR55R57R4R34
Period Tracker Period Calendar Period Tracker Period Calendar is generally considered reliable for predictions R55R57. However, several users report serious issues including unexpected charges R4R34R36R40, virus messages/scams R12R13R24, and inability to restore data after switching devices or resetting phones . There are also complaints about intrusive ads and notifications .
Flo Cycle & Period Tracker Flo Cycle & Period Tracker is seen as a consistent tracker by long-term users . However, many users report unauthorized charges and difficulty getting refunds . There are also concerns about data privacy, with one user mentioning a lawsuit regarding data selling R90. Some users find the app less helpful for irregular periods or specific life stages like perimenopause without paying .
Price and Value tieR5R11R33R4
Period Tracker Period Calendar Period Tracker Period Calendar is advertised as free and many users appreciate its free functionality R5R11R33. However, a significant number of recent reviews detail unexpected, high monthly or yearly charges, with users feeling scammed or misled about the 'free' nature of the app R4R34R36R40. Some users also complain about ads in the free version .
Flo Cycle & Period Tracker Flo Cycle & Period Tracker is widely criticized for its aggressive monetization strategy. While it has a free tier for basic tracking, most valuable features, insights, and educational content are locked behind a premium subscription, which users find expensive R61R67R71R75. Many feel it's a 'money grab' and that essential women's health information should not be paywalled R67R75.
Pick Period Tracker Period Calendar if

You are a younger user or someone looking for a simple, accurate period tracker with basic features and are willing to navigate potential issues with ads or carefully monitor for unexpected charges R27.

Pick Flo Cycle & Period Tracker if

You are a long-term user already invested in the Flo ecosystem, find its predictions accurate for fertility or pregnancy tracking, and are willing to pay for its premium features despite the cost .

Evidence note: Both apps have a significant number of negative reviews related to their pricing models and unexpected charges, which skews recent sentiment. For Period Tracker Period Calendar, the 'free vs paid' asymmetry is particularly pronounced, with many negative reviews focusing on alleged unauthorized charges despite the app being advertised as free. For Flo, the criticism is more about the aggressive push for subscriptions and locking features behind a paywall.

Frequently asked

Is Period Tracker Period Calendar truly free?
While Period Tracker Period Calendar is free to download and offers basic tracking, many users report being charged almost $50 monthly or £35-£40 yearly without clear consent or prior notification, leading to accusations of hidden charges and scams R4R34R36R40.
What are the main complaints about Flo Cycle & Period Tracker?
The main complaints about Flo Cycle & Period Tracker revolve around its aggressive push for premium subscriptions, with users stating that most valuable features, insights, and educational content are locked behind a paywall, making the free version feel limited and frustrating R61R67R71R75.
Do these apps have issues with data privacy or security?
Period Tracker Period Calendar users have reported alarming incidents of virus messages and scams appearing within the app, with one user even claiming their device got a virus R12R13R24. Flo Cycle & Period Tracker users have expressed concerns about data privacy, with one review mentioning a lawsuit regarding data selling R90.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R8] Period Tracker Period Calendar 5/5 · US Five stars: So this app predict my period perfectly the exact day. It’s also helping me with my acne problem, so it’s it just blew my mind.
  2. [R55] Period Tracker Period Calendar 5/5 · US Great: I love this app. Almost head on accurate all the time.
  3. [R57] Period Tracker Period Calendar 5/5 · US Accurate: Never failed me. I love this app
  4. [R47] Period Tracker Period Calendar 5/5 · US AMAZING APP.: I recently got my first period and decided to try out this app! There’s symptom logs, a cute little calendar, positions to relieve period cramps, and even an at home breast exam tutorial! Amazing app, honestly!
  5. [R17] Period Tracker Period Calendar 5/5 · US Excelente app: Muy practica y fácil de usar
  6. [R20] Period Tracker Period Calendar 5/5 · US The app is very practical and easy to use. · translated
  7. [R60] Period Tracker Period Calendar 5/5 · US Amazing: So helpful and very easy to understand
  8. [R27] Period Tracker Period Calendar 5/5 · US for younger people: I’m a 10 year-old I got my period and this is really helping tracking it
  9. [R4] Period Tracker Period Calendar 1/5 · US Price: So I’d like to say most of this app is free. It’s free to download and it’s free to use. But behind doors. They charging u almost 50$ monthly that I keep getting charged on apple. For an app that supposedly is free. I don’t recommend downloading or using unless u want to get charged. Need I remind u it never said anywhere id get charged to use the app.
  10. [R34] Period Tracker Period Calendar 1/5 · GB Bad App Dont buy it: They transferred my money straight to my bank account without my consent, and I didn't even intend to make that payment. As I have been experiencing my period continuously for more than I expected, I filed a complaint with the App Store, but they informed me that I cannot receive a refund of £35. I feel very confused and frightened since my period is regular. And I still get m
  11. [R5] Period Tracker Period Calendar 5/5 · US .: Great App , Not Only is it Accurate And informative But it’s Free!!
  12. [R11] Period Tracker Period Calendar 5/5 · US Period tracker: The most helpful app it tells me when it happens and all that
  13. [R33] Period Tracker Period Calendar 5/5 · US I love this app!: I just got this app recommended by a friend and I completely love it. I’m currently still to find new perks will see what other great functions it can have
  14. [R36] Period Tracker Period Calendar 1/5 · GB False advertising: Says the app is free just got charged £35.99 for something I did not agree to how can that price even be justified
  15. [R40] Period Tracker Period Calendar 1/5 · GB Took £39 - A subscription trap: Really gutted. I’m struggling with money as it is. Lost my job due to seizures and getting in to debt :( I really could have done without this. Got in touch but no reply. If this got sorted, I’d happily change the review to 5* because the app itself is actually great. Just so upset to be charged so much money that I really need.
  16. [R61] Flo Cycle & Period Tracker 1/5 · US Costly: I’ve used this app for awhile and now that the subscription price has gone up it’s ridiculous. Not to mention keeping it free means they limit all access to the app now. Which it used to not be like that. It was more if you wanted more features than the regular ones then you could upgrade to premium, now you cannot do anything on the app without being a premium member. I’m extremely disapp
  17. [R67] Flo Cycle & Period Tracker 2/5 · US money grab: works for tracking your period, but everything they advertise, you have to pay for, like any other app. basically a calendar you could make yourself, but with the usual manipulative scamming methods every other app uses😽 no benefits
  18. [R71] Flo Cycle & Period Tracker 4/5 · US Nice app: Very good for logging my period, lists symptoms well and clearly. Don’t like that I have to pay money to know more symptoms though. Seems a bit excessive.
  19. [R75] Flo Cycle & Period Tracker 3/5 · US Why???: Okay I love the app it’s good, but why should I have to pay to learn about my body please make it to where we have more access to more stuff like about our discharge and health and beauty tips please
  20. [R12] Period Tracker Period Calendar 3/5 · GB Please be careful: This app is great. Very accurate and very good. But please be careful today I was taken to a page on safari by the apps trying to get me to click a link to clear viruses given to me by the app. Obviously this is a scam and I did not click this link. If you use this app because it is great make sure you don’t click anything that looks suspicious.
  21. [R13] Period Tracker Period Calendar 1/5 · US Do not download!!!!: The app was fine at first but then I couldn't get out of the app so i turned off my device and I couldn't get out of the lock screen or use the shortcuts on the lock screen so I had to reset it. Turns out i got a virus on my device😭😭
  22. [R24] Period Tracker Period Calendar 1/5 · GB Virus message: Logged on this morning & the message button was flashing red. Clicked on it and it opened a Google message with a count down timer saying my phone had been infected with a virus and I had to click the button below to save my files etc I deleted the app but wanted to notify developers - seemed linked to safari as same message was there when I went to safari to search if app had been
  23. [R90] Flo Cycle & Period Tracker 3/5 · US Expensive, but helpful: I enjoy this app. I pay for it to track my cycle. Concerns/Areas to improve: 1. I’m worried they are apart of the lawsuit that sold our information, but I guess since the government watches us anyway, it doesn’t matter. 2. It would be great if the notifications could be adjusted. 4-5 notifications with irrelevant things isn’t helpful, perhaps letting us adjust the settin

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store