I really don’t like the new view. Please make an option to make classic the default view.
Estimated from the grossing charts of Oct 24, 2026 in the 53 countries we track, and ratings growth on the App Store.
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Measured from the store, not estimated.
From the latest 500 reviews on the United States App Store, Jul 22, 2013 to Aug 31, 2026: 40% are 1 or 2 stars. Open a theme to read what people wrote.
61 of the 1 and 2 star reviews.
★★★★★ This latest update is AWFUL!
★★★★★ BUT, after a recent update, the app suddenly let me know that sensor support now required a $20/yr subscription.
★★★★★ update: I lowered this to one star because it appears after some experimentation that now you have to pay annually for any sensors, including just your apple watch heart rate.
44 of the 1 and 2 star reviews.
★★★★★ It displays error messages when I try to start a workout, and won't load workout routines, including fitness assessments so you can even see where your HR zones are at.
★★★★★ App used to be great. Now the entire workout it keep connected and disconnecting from my Heart rate monitor. Very annoying and inconsistent. Had to delete
★★★★★ My iPhone was broken and I had to reset everything including my appleID (long story).
44 of the 1 and 2 star reviews.
★★★★★ I'd pay $100 USD for a workout tool that doesn't have a sociopathic need to sync (aka share-steal) my data across my devices and doesn't have a EULA with a so-called “Privacy Policy”.
★★★★★ The first time I didn't notice it had disconnected and so I lost about 20 minutes of tracking before I realized.
★★★★★ I have an iPhone 12 and Apple Watch 6 and despite ensuring the global and local settings are correct (40th time to make this adjustment), the watch and phone app can't stay in sync and everything stops tracking after…
34 of the 1 and 2 star reviews.
★★★★★ Anyway, I paid the yearly fee for pro and now there is no way to reach customer service through the web site or the app because it won't let me I.
★★★★★ BUT, after a recent update, the app suddenly let me know that sensor support now required a $20/yr subscription.
★★★★★ I tried to find a place to get support from iCardio and posted a question about this issue but never received a response.
31 of the 1 and 2 star reviews.
★★★★★ Disappointed to see such a great app become totally unusable, even more so since I'm not sure I'll be able to get a refund for the subscription fee.
★★★★★ A while ago, I bought a lifetime ad-free subscription to iCardio.
★★★★★ not worth the subscription so many better options that are actually free
25 of the 1 and 2 star reviews.
★★★★★ It displays error messages when I try to start a workout, and won't load workout routines, including fitness assessments so you can even see where your HR zones are at.
★★★★★ I'll give them more money." The best companies will even freeze the existing code branch and allow people that already have purchased the app to stay on that with minimal maintenance updates, and then will introduce an…
★★★★★ Heart rate reading freezes up on app.
22 of the 1 and 2 star reviews.
★★★★★ The images are now blurry, and when you click for help options, it loads a full-size webpage that isn't designed for mobile use and is hard to read through all of the popups.
★★★★★ But taking away existing functionality from the people who bought your app and supported you in the very beginning was just wrong...
★★★★★ Now I have a useless app.
13 of the 1 and 2 star reviews.
★★★★★ No, you also need a Fitdigits Account.
★★★★★ Today it constantly interrupted my workout with ads and marketing tactics to try to get me to buy an account.
★★★★★ No reason to require a login
33 of the 4 and 5 star reviews.
★★★★★ It's simple and colorful.
★★★★★ It is very easy to use and I don't need my glasses while I am working out to see the text.
★★★★★ I have been using this app forever! As a clinical exercise physiologist, I appreciate how precisely or simply you can monitor each exercise session. It also has all of the different activities I participate in and is…
27 of the 4 and 5 star reviews.
★★★★★ Note: I do find the heart rate strap to be more accurate on the calorie burn than the watch, but you can choose whether the app uses the watch or strap for your heart rate tracking.
★★★★★ It works as advertised and seems to be very accurate.
★★★★★ Extremely accurate, plenty of options, and very detailed.
22 of the 4 and 5 star reviews.
★★★★★ It has a good set of data on the display including a heart rate history graph that's useful in spin classes.
★★★★★ Thanks for making a useful tool that I've used every day for several years!
★★★★★ Works at it should using Apple Watch simple and effective plenty of info on the workouts.
16 of the 4 and 5 star reviews.
★★★★★ To top all that customer service response time is practically instantaneous and no inquiries go unsettled, kudos!
★★★★★ I've been a customer for a while and when I had syncing issues recently, customer service was really good.
★★★★★ I have reached out to devs a few times and always received fast response. Even took one of my suggestions once....
14 of the 4 and 5 star reviews.
★★★★★ It syncs perfectly with my watch and gives me all the info I want in a really seamless design.
★★★★★ Apple watch interface disappeared with latest update!
★★★★★ This app is the best fitness tool, the design is simple and beautiful, it's highly customizable and it focused on fitness (example: use of VO2 max, resting heart rate etc).
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.
I really don’t like the new view. Please make an option to make classic the default view.
LOVE THIS APP and it’s clear display of my HR Zones!!!
Always having trouble connecting to Apple Watch. Each device claims the other is not in range. Never had this problem with iwalker….never.
I have used this product since its inception to track my workouts and have zero complaints. looking back at the saved results, I have logged over 2000 workouts since 2010. It tracks the type of workout from weightlifting to elliptical to open outdoor activities (think yard work) to open indoor activities (think vacuuming or cleaning a bathroom). It tracks the amount of time, calories, and even effort. If you are outside, it will map your route. The app works with my iPhone and my Apple Watch seamlessly. It also connects to my Polar Heart-rate monitor while it is connected to my elliptical. Note: I do find the heart rate strap to be more accurate on the calorie burn than the watch, but you can choose whether the app uses the watch or strap for your heart rate tracking.
to NotoriousDEBT
I used this app extensively 10 years ago. Unfortunately, after redownloading it again, it’s completely nonfunctional. It displays error messages when I try to start a workout, and won’t load workout routines, including fitness assessments so you can even see where your HR zones are at. The images are now blurry, and when you click for help options, it loads a full-size webpage that isn’t designed for mobile use and is hard to read through all of the popups. I tried uninstalling and reinstalling the app, and now it’s displaying error messages during the setup process, too, so I cannot even reach the main home screens. Disappointed to see such a great app become totally unusable, even more so since I’m not sure I’ll be able to get a refund for the subscription fee.
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Released Oct 6, 2010. Current version shipped Sep 29, 2026.
Prices, ranks and reviews are per country. Revenue above is already worldwide.