[8 Fixes] How to Fix Fitness App Not Working on iPhone
With the launch of iOS 16, Apple allows users to use the Fitness app without an Apple Watch. It means that you can track and monitor your fitness goals only using your iPhone. After you update your iPhone to the latest iOS, your iPhone can record how many steps you take and calories you burn automatically.
This update really brings a lot of convenience to users. However, some users have reported that the Fitness app on their iPhone fails to work. Do you know what causes this issue and how to repair it? Don't worry. In this post, we'll show you the reasons behind this issue, and offer you 8 methods to fix Fitness app not working on iPhone.

- Part 1: Why Is My Fitness App Not Tracking?
- Part 2: How to Fix Apple Fitness App Not Working
- Way 1: Turn on Fitness Tracking
- Way 2: Restart iPhone and Apple Watch
- Way 3: Upgrade iPhone and Apple Watch
- Way 4: Reconnect to Your Apple Watch
- Way 5: Reset Fitness Calibration Data
- Way 6: Reinstall Fitness App
- Way 7: The Best Tool to Fix Fitness App Not Working on iPhoneHOT
- Way 8: Factory Reset your iPhone
- Part 3: FAQs about Fitness App Not Working on iPhone
- Part 4: The Bottom Line
Part 1: Why Is My Fitness App Not Tracking?
A few causes can lead to this Apple Fitness app not working error on your iPhone. We list some common possible reasons in the following. You can check if you have met the same occasions as follows.
- 01 Fitness tracking settings or background activity are disabled on your iPhone, such as Fitness Tracking being turned off or Low Power Mode restricting the app from running in the background.
- 02 Software issues may be causing the problem, including an outdated Apple Watch system or iOS bugs.
- 03 Connection problems between your iPhone and Apple Watch can prevent activity data from syncing properly.
- 04 Sensor or GPS malfunctions on your iPhone, such as issues with accelerometers, gyroscopes, or GPS, may affect accurate activity tracking.
- 05 Potential hardware issues could be involved if the problem persists, in which case contacting Apple Support or the app’s customer support is recommended.
Part 2: How to Fix Apple Fitness App Not Working
After understanding the possible reasons why the Apple Fitness app is not working, it's time to take action. Below are several effective methods to help you fix the issue and get your Fitness app back to normal. Try these solutions one by one until the problem is resolved.
Way 1: Turn on Fitness Tracking
If Fitness Tracking has not been enabled on your iPhone, any app that tracks your activity, including the Fitness app, cannot work properly. Therefore, you need to enable Fitness Tracking on your iPhone.
- Step 1. Head to Settings > Privacy & Security, and then choose Motion & Fitness.
- Step 2. Turn on the toggle next to Fitness Tracking and Health.
- Step 3. Go to the Apple Watch app on your iPhone, and then choose My Watch > Privacy.
- Step 4. Turn on the toggle near Fitness Tracking and Heart Rate.
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Way 2: Restart iPhone and Apple Watch
Restarting your iPhone and Apple Watch can help you fix some system errors on them.
To restart your iPhone, you need to head to the Settings app on your iPhone, and then select General > Shut Down. Then, wait for your iPhone screen to turn black and keep holding the Side button to turn it on again.

To restart your Apple Watch, you can hold down the Side button, and then drag the Power Off slider on your Apple Watch screen. Then, power your Apple Watch back on later, pair it to your iPhone and give the Fitness app some time to synchronize the data.
Way 3: Upgrade iPhone and Apple Watch
If the Apple Fitness app is not working on your iPhone, it may be due to your iPhone and Apple Watch running an outdated version of its operating system. To ensure your Apple devices are equipped with the latest security features, it's important to regularly update them.
To update your iPhone, please go to Settings > General > Software Update, and then click on Update Now button after you choose an available updated version.

Then, you can head to Settings > General > Software Update on your Apple Watch. Next, click Download and Install, from a pop-up prompt, tap the Proceed option, lastly, tap the Install option to update your smart watch.

Way 4: Reconnect to Your Apple Watch
In some cases, there's something wrong with your iPhone's connection to the Apple Watch. Therefore, you can unpair your Apple Watch and reconnect it again. Here are the detailed steps for you to reconnect to your Apple Watch.
- Step 1. Launch the Settings app on your iPhone and go to My Watch.
- Step 2. Tap on the i icon, and choose Unpair Apple Watch.
- Step 3. Click on Unpair Apple Watch again to unpair.
- Step 4. Put your iPhone near the watch and wait for the pairing screen.
- Step 5. Tap Continue and choose Set Up Myself > Set Up to confirm the connection.

Way 5: Reset Fitness Calibration Data
If your workout data isn't being recorded or there's an issue with your Apple Watch data not syncing properly, you can try to reset Fitness calibration data to fix Fitness app not working on iPhone. Below is the step-by-step guidance for you to reset Fitness calibration data.
- Step 1. On your iPhone, go to the Watch app, and select My Watch > Privacy.
- Step 2. Tap on Reset Fitness Calibration Data and click it again when the pop-up occurs.

Way 6: Delete and Reinstall Fitness App
Reinstalling Fitness app is also a good option for you to fix Apple Fitness app not working. You can long press the icon of Fitness and then choose Remove App. Then, tap on Delete App followed by Delete. After the app has been removed, you can go to App Store to install it on your iPhone again.

Way 7: The Best Tool to Fix Fitness App Not Working on iPhone
When you meet such issue as Fitness app not working, the best choice for you is using TunesKit iOS System Recovery. This is a reliable tool for iPhone/iPad/iPod touch users to repair the system glitches they meet on their devices. You are able to fix more than 150 system-related errors with this tool, such as Fitness app not working on iPhone, iPhone Safari not working, Siri not working on iPhone, and more.
The whole repair process is rather easy and simple for you, even if you know little about fixing iOS system problems. Thanks to its user-friendly guidance, there's no need for you to seek help from professionals when you meet such system errors. After you download TunesKit iOS System Recovery, you won't be obsessed with system glitches on your iOS devices. Besides, this multifunctional program also supports you to reset your devices, enter/exit the Recovery mode, and upgrade/downgrade your iOS system within several clicks.
Fix iPhone Fitness App Issues Fast
Repair system-related Fitness app problems on your iPhone safely and easily with TunesKit iOS System Recovery—no data loss required.
Now, let's take a look at how to fix iPhone Fitness app working failure with TunesKit iOS System Recovery.
Step 1Connect iPhone to PC
On your PC, download, install, and run TunesKit iOS System Recovery. Then, get your iPhone connected to the computer via a workable USB cable, and choose iOS System Repair to move ahead. On the next page, there will be a list of some common device issues and if your iOS error isn't on the list, don't worry, just click Start button to continue.

Step 2Choose Standard Repair
In this section, TunesKit iOS System Recovery offers two repair modes to you, including Standard Repair and Deep Repair. Standard Repair is enough for you to fix Apple Fitness app not working issue with no data loss.

Step 3Download firmware package
Now, you need to make sure that all information of your iPhone displayed on the screen is correct. Then, if there is nothing wrong, you can tap on Download button to start the downloading process.

Step 4Fix Fitness app not working without data loss
After you download the right firmware package, you can hit on the Repair button to fix your iPhone. You won't lose any data stored on your iPhone if you choose Standard Repair. After the fix is done, your iPhone will restart, please open Fitness app and it should now be able to track your fitness data.

Way 8: Factory Reset your iPhone
If the Fitness app on your iPhone is still not working, a more drastic solution you might consider is performing a factory reset to restore your iPhone to its initial settings. This approach can sometimes resolve the issues you're experiencing with the app. However, a factory reset will erase all the data and content on your device.
Before proceeding with the reset, ensure you have backed up your iPhone. Once you've secured your data, follow these steps to reset your iPhone to factory settings.
- Step 1. Open Settings app on your iPhone, then tap on General > Transfer or Reset iPhone.
- Step 2. Tap on Erase All Content and Settings, select the blue Continue button, then enter your passcode used to unlock this iPhone.
- Step 3. Wait for the process of resetting your iPhone to complete and then check if Fitness app is working properly.

Part 3: FAQs about Fitness App Not Working on iPhone
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1. Will deleting the Fitness app erase my past data?
No. Your workout history and activity trends are stored in the Health app, which is separate from the Fitness app. You can safely delete and reinstall the Fitness app from the App Store to clear deep-seated software bugs. When you reinstall it, your historical data will automatically repopulate as long as you are signed into the same iCloud account.
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2. Why is my Apple Fitness app not tracking steps or activity?
This usually happens when Motion & Fitness is turned off, location services are disabled, or the iPhone's motion sensors are not functioning properly.
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3. How do I fix the Apple Fitness app not syncing with Apple Watch?
Check Bluetooth and Wi-Fi connections, update both iOS and watchOS, and make sure your Apple Watch is properly paired with your iPhone.
Part 4: The Bottom Line
That's all for how to fix Fitness app not working issue. All these 8 fixes mentioned above are effective and efficient for you. If you know little about iOS repair, you are recommended to use TunesKit iOS System Recovery to fix your iOS devices. This program is 100% safe and professional for you. It can solve the problem of glitches on your iOS device without data loss.