Cardiogram does not open, or you see a server error

We are actively investigating an issue affecting access to Cardiogram with Facebook authentication. Please visit the status page for more information.

Cardiogram is optimized to function on the latest publicly released operating systems for both iPhone and Android. If you have any pending operating system updates waiting to be installed, please update your phone before checking the app store for any pending Cardiogram updates.

Steps to update your iPhone

Steps to update your Android phone

If you encounter an issue or connection error when you open the Cardiogram app, don't worry. Here are some steps you can take to resolve the issue:

  • Check the Cardiogram server status by visiting our status page at
  • Install any pending updates for your phone's operating system and Cardiogram app from the app store.
  • Force close the Cardiogram app running in the background of your phone.

iPhone users:

To force close the Cardiogram app on an iPhone, follow these steps:

  • Swipe up from the bottom of the screen and pause in the middle of the screen.
  • Swipe right or left to find the Cardiogram app preview.
  • Swipe up on the Cardiogram preview to close the app.

Android users:

To force close Cardiogram on an Android phone, you can follow these steps:

  • Open the "Settings" app on your Android phone.
  • Scroll down and tap on "Apps" or "Application Manager".
  • Find and tap on "Cardiogram" from the list of installed apps.
  • Tap on the "Force Stop" button.
  • Confirm that you want to force stop the Cardiogram app by tapping on "OK" in the pop-up window.

If you haven't done so in a while, it's a good idea to force close all your apps before relaunching Cardiogram.

  • Restart your phone.

If the error continues, try reinstalling the Cardiogram app. Don't worry; your data is saved to your profile in the cloud and will be recovered when you sign back in.

iPhone users:

  • Touch and hold the Cardiogram icon from your home screen.
  • Tap "Remove App".
  • Tap "Delete App" (tapping "remove" does not uninstall the app from your iPhone.)
  • Tap "Delete" to confirm.

Android users:

  • Open the Google Play Store app.
  • Tap the Profile icon at the top right.
  • Tap "Manage apps & devices."
  • Tap "Manage".
  • Select Cardiogram.
  • Tap "Uninstall".
  • Reinstall the Cardiogram app.

If you continue to experience issues, please contact our support team at [email protected]. Be sure to include any available screenshots, your phone or watch make and model, and the software version installed on your device. This information will help us provide a quick resolution.

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