Hi! I understand you're seeing a purple screen when using the Cardiogram app on your iPhone with iOS 18.6. Just to clarify, does this purple screen appear immediately when you open the Cardiogram app, or does it happen after some use? Also, do you get any error messages or does the app freeze at that purple screen?

While I wait for your reply, here are some initial simple steps we can try to fix the purple screen issue with the Cardiogram app on your iPhone:

1. Force quit the app and reopen it
- Swipe up from the bottom of the screen and pause slightly in the middle (or double-click the Home button, if your iPhone has one).
- Find Cardiogram and swipe it up to close it completely.
- Then tap the Cardiogram icon again to open it fresh.

2. Restart your iPhone
- Press and hold the power button and either volume button until “slide to power off” appears. Slide to power off, wait 30 seconds, then hold the power button to turn it back on.

3. Update the Cardiogram app
- Go to the App Store, tap your profile icon at the top right, and scroll down to check if there’s an update available for Cardiogram. Install it if there is one.

4. Check for iOS system update
- Go to Settings > General > Software Update to see if your iPhone has any pending iOS updates.

5. Reinstall Cardiogram app
- Press and hold the Cardiogram app icon, tap “Remove App,” then delete it.
- Afterward, reinstall it fresh from the App Store.

If you've already tried any of these steps, please let me know so we can explore more advanced troubleshooting or check for any known issues on our end.

Are you able to try these out and share what happens?

Deleted app. Now app looks different. Not same.

Thanks for letting me know that after reinstalling, the Cardiogram app looks different. Sometimes, app updates or reinstallations can bring changes to the user interface or features, which might make the app look or feel different than before.

To understand better, could you tell me specifically what looks different? For example:

- Is the layout or color scheme different?
- Are some features missing or relocated?
- Does the app behave differently, like menus or buttons appearing in different places?

Occasionally, changes reflect app updates with new designs or functionality improvements. If it feels like something is missing or not quite right beyond the styling changes, we can try a couple of things:

1. Check for latest app version: It’s possible you got a newer version with a redesign. Go to the App Store, search Cardiogram, and ensure you have the latest version installed.

2. Log in to your account: Sometimes after reinstalling, you may need to log back in to restore your previous data and settings.

3. Review app permissions: Go to Settings > Cardiogram on your iPhone and verify it has permissions it needs (like Health data, Notifications).

4. Clear Cache or app data: iOS apps don’t generally have a manual cache clear like Android, but reinstalling often resets this.

If the app still feels off or you think the functionality is impaired, please describe what you see or don’t see. I want to make sure it’s working properly for you.

Let me know these details, and I can guide you further!

New app says cardiio. Is that the correct app?

Thanks for checking! The "Cardiio" app is actually a different app from "Cardiogram." Cardiogram is the app you originally had—it's focused on continuous heart rate monitoring and health insights using Apple Watch or other devices. Cardiio, on the other hand, is a heart rate monitor app that uses your phone camera to measure heart rate and other basic fitness indicators.

So, if you're looking to use the Cardiogram service, Cardiio is not the correct app. I recommend searching for "Cardiogram" in the App Store and installing that one to continue with your previous data and experience.

If you want, I can guide you step-by-step on how to find and reinstall the correct Cardiogram app on your iPhone running iOS 18.6. Would you like that?

No cardiogram app at all. Is there a new replacement?

Thanks for your patience while I looked into this for you. It appears that the Cardiogram app has been discontinued and is no longer available in the App Store. The app listing was removed after the company was sold in 2025, and the original services have ceased7 10.

Unfortunately, there is no direct replacement app from Cardiogram itself. However, some users have found alternatives with similar heart rate and health monitoring features, such as:

- Empirical Health (available for Apple Watch and other platforms)1
- Tachymon, recommended by some in the community for heart rate monitoring2

If you relied heavily on Cardiogram’s features, I’d be happy to help you explore these alternatives or recommend other apps that work well on your iPhone with iOS 18.6. Would you like me to guide you through some of these options?

Yes need app that works with iphone & Apple watch

Hi! I see you’re looking for an app that works well with both your iPhone (iOS 18.6) and Apple Watch to monitor heart rate and health data, similar to Cardiogram.

To clarify, the Cardiogram app has traditionally supported both iPhone and Apple Watch by pulling heart rate data from Apple Health and displaying it in a simple, real-time dashboard. It wasn’t always a standalone Apple Watch app but worked closely with your iPhone and the Health app on iOS1 9.

However, the Cardiogram app has been removed from the App Store in recent years due to company changes, so the original app may no longer be available officially3 6.

Given that, here are a few options you can consider:

1. Using the Apple Watch’s built-in Health apps:
- The Apple Watch (Series 4 and later) has a built-in ECG app that records your heartbeat and rhythm using the electrical heart sensor7.
- The standard Heart Rate app on the watch and the Health app on the iPhone provide continuous heart rate tracking and basic metrics.
- These apps are tightly integrated and reliable if you want a native experience.

2. Other third-party heart rate monitoring apps compatible with iPhone and Apple Watch:
- Apps like Empirical Health or Tachymon are recommended alternatives that support Apple Watch and iPhone health data monitoring2 10.
- These apps can provide insights, heart rate trends, and some advanced features similar to Cardiogram.

3. Check the App Store manually:
- You can search for “heart rate monitor” or “Apple Watch heart rate” in the App Store and filter reviews to find an app that matches your needs and works well on iOS 18.6.

If you want, I can guide you through setting up the built-in Apple Watch ECG and Heart Rate apps or help you explore how to install and use trusted third-party apps like Empirical Health on your devices.

Would you like me to walk you through these setups or suggest specific apps?