Estimated from the grossing charts of Oct 25, 2026 in the 53 countries we track, and ratings growth on the App Store.
From our daily snapshots of every grossing chart and daily ratings counts.
| Sep 26, 2026 | not in a grossing chart |
| Sep 27, 2026 | not in a grossing chart |
| Sep 28, 2026 | not in a grossing chart |
| Sep 29, 2026 | not in a grossing chart |
| Sep 30, 2026 | not in a grossing chart |
| Oct 1, 2026 | not in a grossing chart |
| Oct 2, 2026 | not in a grossing chart |
| Oct 3, 2026 | not in a grossing chart |
| Oct 4, 2026 | not in a grossing chart |
| Oct 5, 2026 | not in a grossing chart |
| Oct 6, 2026 | not in a grossing chart |
| Oct 7, 2026 | not in a grossing chart |
| Oct 8, 2026 | not in a grossing chart |
| Oct 9, 2026 | not in a grossing chart |
| Oct 10, 2026 | not in a grossing chart |
| Oct 11, 2026 | not in a grossing chart |
| Oct 12, 2026 | not in a grossing chart |
| Oct 13, 2026 | not in a grossing chart |
| Oct 14, 2026 | $2.3K a month |
| Oct 15, 2026 | not in a grossing chart |
| Oct 16, 2026 | not in a grossing chart |
| Oct 17, 2026 | not in a grossing chart |
| Oct 18, 2026 | not in a grossing chart |
| Oct 19, 2026 | not in a grossing chart |
| Oct 20, 2026 | $5.2K a month |
| Oct 21, 2026 | not in a grossing chart |
| Oct 22, 2026 | not in a grossing chart |
| Oct 23, 2026 | not in a grossing chart |
| Oct 24, 2026 | $6.5K a month |
| Oct 25, 2026 | not in a grossing chart |
| Oct 24, 2026 | 11.3K ratings |
| Oct 25, 2026 | 11.3K ratings |
Measured from the store, not estimated.
From the latest 500 reviews on the United States App Store, Apr 6, 2017 to Oct 8, 2026: 13% are 1 or 2 stars. Open a theme to read what people wrote.
20 of the 1 and 2 star reviews.
★★★★★ I've been using this app for nine (9) years, and today it randomly logged me out and won't let me login.
★★★★★ Then when I tried to log in their “forgot password” link never works.
★★★★★ Just downloaded this app and I can't even make an account?
18 of the 1 and 2 star reviews.
★★★★★ I keep getting and error message that says “account creation unavailable”
★★★★★ Please revert the changes made to the app until all bugs can be worked out.
★★★★★ Over time this app has become less user friendly with more glitches.
15 of the 1 and 2 star reviews.
★★★★★ They completely redesigned it recently and I'm having a hard time with the new version.
★★★★★ Suddenly it says I have to update and all of my data is inaccessible.
★★★★★ I used this app for 5+ years. It was great. Then they redesigned the app and booted me out and I lost every bit of my data. All of it. Then when I tried to log in their “forgot password” link never works. And emailing…
9 of the 1 and 2 star reviews.
★★★★★ So I'm so lost as to how to proceed from here.
★★★★★ Then they redesigned the app and booted me out and I lost every bit of my data.
★★★★★ If I put in “bloated” and lose 10 points, chances are I'm not going to put in that symptom!
7 of the 1 and 2 star reviews.
★★★★★ I have been paying the $45 a year subscription for this for 9 years, too, and they thank me by kicking me out and holding nine years of my cycle tracking hostage.
★★★★★ UPDATE: purchased a 1 year membership for $10 on a “deal” and it charged me $25.
★★★★★ I've even paid extra for subscriptions.
6 of the 1 and 2 star reviews.
★★★★★ I have server connectivity issues constantly and my data either doesn't save at all or saves under the wrong date.
★★★★★ Until the app supports offline mode with syncing when data reconnects, it's often useless while traveling or when the app is experiencing (now frequent) networking connection issues.
★★★★★ Well, I was wrong on both accounts.
5 of the 1 and 2 star reviews.
★★★★★ HORRIBLE UX, worse support.
★★★★★ No available support to solve the issue.
★★★★★ So far there's been no reply.
3 of the 1 and 2 star reviews.
★★★★★ I love this it was a great app and extremely accurate but I updated my phone to an iPhone 12 and now it doesn't work
★★★★★ It was stuck on 28 and mine are always shorter and always a little different month to month.
★★★★★ I'm constantly having to delete and re-download because it freezes every time I try to use it.
96 of the 4 and 5 star reviews.
★★★★★ And this one's my favorite because it's so friggn simple to navigate.
★★★★★ No ads in your face, no constant push to share very personal data with the company (Ovia I'm looking at you), easy to navigate UI.
★★★★★ It has amazing functionality and is clear and easy to read.
90 of the 4 and 5 star reviews.
★★★★★ I have been using this app for about 3 years and really find it useful!
★★★★★ This app has been immensely helpful to me.
★★★★★ This app has so much information and helps track a variety of symptoms and tests.
50 of the 4 and 5 star reviews.
★★★★★ It really was more accurate than the other apps I have used (Glow and PreMom).
★★★★★ I wanted to enter data into all of them so I could determine which app was best/most accurate.
★★★★★ FF really helped me nail down my ovulation date and made it so much more accurate for our TTC journey.
42 of the 4 and 5 star reviews.
★★★★★ the year subscription is worth it as well.
★★★★★ This is the best free fertility app.
★★★★★ The paid version is even better but the free version I use now just to keep track of my periods.
18 of the 4 and 5 star reviews.
★★★★★ No ads in your face, no constant push to share very personal data with the company (Ovia I'm looking at you), easy to navigate UI.
★★★★★ I will say I don't like the new look of the app interface .
★★★★★ Don't be turned off by the interface that looks basic/simple.
Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.
Latest reviews, United States App Store.
Yo estaba llevando mis registros manuales, desde es escribir cada día la temperatura, el aspecto del moco hasta descifrar la ovulación, con esta app me siento más segura porque no paso por alto nada y tengo un interpretación y un análisis más certero.
I’m trying a few apps at the same time trying to get pregnant. And this one’s my favorite because it’s so friggn simple to navigate. Here’s the days your most fertile, go for it. Done and done.
I've been using this app for nine (9) years, and today it randomly logged me out and won't let me login. They have essentially stolen nine years of my data. I have been paying the $45 a year subscription for this for 9 years, too, and they thank me by kicking me out and holding nine years of my cycle tracking hostage. I will never trust them again after this. Thanks for nothing, I guess.
It was the best free tracking app. They completely redesigned it recently and I’m having a hard time with the new version. Looks shiny on the outside but much less intuitive, harder to find things. Feels vibe coded.
There have been several instances where my info fails to save. For example, I’ll edit and fix my period days, but the next day I open my app, it has reverted back to the old data.
I have used this app/website for more than 15 years. The design and functionality were perfectly fine. Suddenly it says I have to update and all of my data is inaccessible. There was no update in my app updates list and when I go to the app in the app store it only shows the option to open the app. I have an old iOS, but every other app shows me the option to update, then tells me it can't if they require a newer iOS. So I'm so lost as to how to proceed from here. Newer iOS have ruined a lot of basic functionality, so I'm sooner to go without than to update my whole iOS for an app. Maybe they are wanting to lose users... who knows. The web version will not keep me logged in and the help response from the company said that is an issue on my end when plenty of other websites I use on my phone browser keep me logged in just fine.
Same category, earning about as much.
Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.
Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.
Where this app is buying and earning its users. Each link opens pre filtered.
Most repeated terms in the listing. Highlighted ones also appear in the title.
Released Jun 21, 2011. Current version shipped Oct 20, 2026.
Prices, ranks and reviews are per country. Revenue above is already worldwide.
 Menstrual Calendar FMCHealth & Fitness | Analyze → |
