Fitness app not working on iPhone? – How to Fix

Fitness apps have become an indispensable part of many people’s daily routines, offering a convenient way to track exercise, monitor health, and stay motivated.

However, users of iPhones sometimes face issues with their fitness apps not working properly.

In this article, we will delve deep into the common problems users face, the reasons behind them, and the steps to resolve the issue of your fitness app not working on iPhone.

By the end, you should have a comprehensive understanding of how to troubleshoot and fix these issues, ensuring that your fitness journey remains uninterrupted.

Common Issues and Their Causes

When it comes to the issue of a fitness app not working on iPhone, users report a variety of problems.

Some common issues include the app crashing upon opening, failing to record workout data accurately, not syncing with other devices or apps, and more.

These problems can be attributed to several factors such as outdated app versions, software glitches in the iPhone’s operating system, lack of storage space, or problems with the iPhone’s hardware.

Outdated App or iOS Version

One of the most common reasons for a fitness app not working on iPhone is running an outdated version of the app or the iPhone’s operating system.

App developers regularly release updates to add new features, improve performance, and fix bugs.

If you are not running the latest version of the app or iOS, you might experience issues.

To resolve this, check the App Store for any available updates for your fitness app and make sure your iPhone is running the latest version of iOS.

To update your iPhone, go to Settings > General > Software Update. If an update is available, download and install it.

Lack of Storage Space

iPhones with limited storage capacity might face issues with fitness apps not working properly if the storage space is almost full.

Apps need a certain amount of free space to run smoothly, and lack of it can lead to crashes and performance issues.

To check your iPhone’s available storage, go to Settings > General > [Device] Storage.

Here, you can see how much space is available and get recommendations on how to free up space.

You might need to delete unnecessary apps, photos, or files to make room for the fitness app to function properly.

Software Glitches

Software glitches in the iPhone’s operating system can also lead to fitness apps not working as intended.

Sometimes, a simple restart of the device can resolve these issues as it clears the phone’s memory and refreshes the system.

To restart your iPhone, hold down the power button (and either of the volume buttons on newer models) until the “slide to power off” slider appears.

Slide it, wait for the device to turn off, and then hold the power button again to turn it back on.

Problems with the App’s Permissions

Fitness apps require various permissions to access data and functions on your iPhone, such as location services, motion and fitness data, and more.

If these permissions are not granted, the app might not work properly.

To check and modify the app’s permissions, go to Settings > Privacy, and select the necessary category (e.g., Location Services, Motion & Fitness).

Find your fitness app in the list and ensure that it has the required permissions.

Troubleshooting Connectivity Issues

Fitness apps often need to connect to external devices (such as heart rate monitors, fitness trackers, or smart scales) via Bluetooth. If there are connectivity issues, the app might not function properly.

To troubleshoot, ensure that Bluetooth is enabled on your iPhone and that the external device is properly paired.

You can manage Bluetooth connections in Settings > Bluetooth. If the device is not connecting, try forgetting the device and pairing it again.


Facing issues with your fitness app not working on iPhone can be a setback, but most of the time, these problems can be resolved with simple troubleshooting steps.

Keeping your app and iOS up to date, ensuring you have enough storage space, granting the necessary permissions, and maintaining stable Bluetooth connections are crucial steps in ensuring the smooth functioning of your fitness app.

By following the guidelines and solutions provided in this article, you should be able to resolve any issues and get back to focusing on your fitness goals.

Remember, technology is here to assist us in our journeys, and a little troubleshooting can go a long way in maintaining a seamless digital experience.

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Edward brings years of experience in a variety of different fields including online marketing & No-code app development, and he's been investing in stocks and cryptocurrency since 2016. Outside of work you'll usually find him watching movies at the local cinema or playing games in the Apple Arcade.

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