If you’re not seeing Wear OS or Samsung Galaxy Watch data in Cardiogram

If you're using a Wear OS watch or a Samsung Galaxy Watch 4 or newer, but not seeing your data in Cardiogram, here are the steps to troubleshoot.

🛠 Why this happens

After Samsung Galaxy Watch 4 launched in 2021, Google Fit was no longer pre-installed on Samsung’s version of Wear OS. This changed how Cardiogram collects heart rate data.

Cardiogram can still import heart rate, step, and activity data from Google Fit if it’s available, but to maintain consistent heart rate tracking, the Cardiogram Wear OS app must remain open in the background on your watch.

⚙️ Fixes to try

✅ 1. Enable Passive Heart Rate Monitoring (Custom Interval)

On your watch:

1. Open the Cardiogram app
2. Scroll down and tap Settings
3. Find Passive HR Monitoring
4. Change it from “Automatic” to “Custom”
5. Set a desired interval (longer intervals conserve more battery)
6. Your watch will begin taking measurements at that interval

✅ 2. Check watch permissions

On your watch:

• Go to Settings > App Permissions
• Tap Cardiogram
• Ensure Physical Activity permission is enabled

If you're in the Cardiogram watch app and see a “Missing Permissions” message, follow the prompt to enable permissions.

✅ 3. Restart & update

• Restart both your watch and phone
• Make sure the Cardiogram app and Wear OS app are up to date on your phone
• Ensure the Cardiogram watch app is running in the background

✅ 4. Confirm your devices are syncing

• Confirm your watch is paired with your phone and actively syncing
• Open the Wear OS app and check that your device is connected
• For Android phones, make sure data flows from your watch → Google Fit → Cardiogram
• Cardiogram sends heart rate data to our servers every 15 minutes, or when the phone app is opened

📱 iPhone users:

• Cardiogram imports steps from Apple Health, not Google Fit
• You will only see step data if your iPhone itself records it (e.g., you carry it while walking)
• If you're attempting to sync Google Fit with Apple Health, it has not been officially tested and is used at your own risk

🧪 First time using the watch app?

When launching Cardiogram on your watch for the first time:

• You’ll be prompted to Allow Cardiogram to access sensor data
• Tap “Allow” when asked
• Make sure permissions are enabled for vital signs and activity tracking

📱 Additional tips for Android phones

If heart rate is being tracked on your watch but not appearing in Cardiogram on your phone:

1. Open your phone’s Settings
2. Go to Apps > App management > Cardiogram > Permissions
3. Make sure Physical Activity is allowed

💬 Need help?

If you've followed all steps and still aren't seeing your data, reach out to us at [email protected]. Let us know your phone and watch model so we can take a closer look.