Hi! I’m sorry to hear that your Cardiogram app has stopped working after the Apple Watch update and that you’re having trouble reinstalling it. Let’s work through this together.

First, could you tell me a bit more? When you say you’re unable to reinstall the Cardiogram app, what exactly happens? For example, does the app fail to download from the App Store on your iPhone, or is it an issue when trying to add the app on your Apple Watch?

Meanwhile, I’ll guide you through some basic steps that often help after Apple Watch updates:

1. Restart your iPhone and Apple Watch:
- Press and hold the side button on your iPhone and slide to power off. Then turn it back on.
- On your Apple Watch, press and hold the side button until you see the power off slider, then slide to turn off. Turn it back on by pressing the side button.

2. Check for any pending updates:
- Open the Watch app on your iPhone. Go to General > Software Update and ensure both your iPhone and Apple Watch have the latest software installed.

3. Try reinstalling Cardiogram:
- On your iPhone, open the App Store, search for “Cardiogram” and attempt to download it again. If it won’t download, check your network connection and available storage.

4. Check your Apple Watch app layout:
- Sometimes the app doesn’t automatically install on the watch even if it’s on the phone. In the Watch app on iPhone, scroll down to see if Cardiogram is listed under “Available Apps” and tap “Install” if it’s shown there.

If you’ve already tried these or if the issue persists, just let me know what you've done so far, and we can get into some more advanced steps.

Does this sound okay? How does your app behave when you try to reinstall it right now?

There is no Cardiogram app in Apple Store

Thanks for letting me know that Cardiogram isn't showing up in the App Store for you. Based on recent information, it appears that the Cardiogram app was removed from the Apple App Store in 2025 after the company changed ownership and ceased operations. This would explain why you cannot find or reinstall it now.7

Since the app is no longer available for download or updates, the Apple Watch update you installed might have caused compatibility issues that can't be fixed by reinstalling.

At this point, the best option would be to look for alternative heart rate and health monitoring apps that support Apple Watch. If you'd like, I can help recommend some good alternatives that work well on your iPhone with watchOS.

Would you like me to help you find another app? Also, please tell me if you need any help transferring your data or setting up a new app.

Are there any alternatives to Cardiogram on iOS?

Great question! Since Cardiogram is no longer available, there are several solid alternatives on iOS that work well with Apple Watch and offer similar heart rate and health monitoring features. Here are some of the top options:

1. Empirical Health – Compatible with Apple Watch, this app offers heart rate monitoring, POTS tracking, and deep health insights. It’s frequently recommended as a Cardiogram alternative and has a high user rating.1 9

2. HeartWatch – This app pulls detailed heart rate data from your Apple Watch and presents it in a user-friendly way. It’s great for continuous monitoring and offers rich analytics.5

3. Welltory – Besides heart rate, Welltory also tracks stress, energy, and other health parameters, making it a versatile health companion for Apple Watch users.6

4. Tachymon – Specifically designed for POTS (Postural Orthostatic Tachycardia Syndrome) patients, it focuses on real-time and average heart rate trends.2

5. Heart Analyzer – Provides a comprehensive pulse tracker and heart health insights, integrating well with Apple Health data.Heart Analyzer on App Store

If you’d like, I can guide you on installing or setting up any of these apps on your iPhone and Apple Watch. Also, if you want help figuring out how to transfer any historical data you might have, just let me know.

Do you want to try one of these alternatives, or perhaps hear about others tailored to specific needs?