If your data isn’t showing in the app after sync, here are a few quick steps to ensure proper synchronization between your Circular Ring and the Circular app.

🔧Missing or Incorrect Sleep/Health Data?

Manually Recalibrating the PPG Sensor

To recalibrate the PPG sensor, follow these steps:

1. Open the app and go to the top-left menu.
2. Select Settings > Self-Diagnostic.
3. Follow the on-screen instructions. You will need a piece of white paper for the recalibration process.

Verifying Successful Recalibration

After recalibrating, confirm that the issue is resolved by:

1. Returning to the Live Measurements circle.
2. Checking if the Quality Index now displays your data.

If the problem persists, please contact our support team for further assistance.

Updated on: 24/11/2025