How to measure your stress with Apple Watch?

Your Apple Watch can record multiple data about your health. And one of this valuable data- beat-to-beat measurements.

In Stress Monitor we developed unique algorithm, that allows us to read and process the beat-to-beat data that your Apple Watch records in Apple Health. Basing on these data, Stress Monitor calculates multiple HRV features, such as SDNN, RMSSD, SD1, pNN50 and other. Further, this data is processed by the AI model to detect stress.

What makes Stress Monitor app unique -that the AI model, that shows the results of measurements is personal. You train your AI model on your personal data. How to do this? Just breathe and evaluate yourself. More information on how it works is here.


Below are the instructions, how to breathe using the Breath app on your Apple Watch to achieve the highest accuracy of your stress-measurements:


  1. Get ready for measurement.

Get into a comfortable position where you can record your measurement. You can stand or sit - it doesn't matter. For the best result we recommend to rest your arms on a table or in your lap while you take a measurement with the Apple Watch facing up. Keep your wrist flat, and hold as still as you can.

If you were physically active just before the measurement, take a break for 10 minutes before the measurement.

  1. A better fit means better readings.

Make sure that your Apple Watch is snug but comfortable on your wrist. If your Apple Watch doesn’t stay in place, or the sensors aren’t reading your heart rate, tighten the band a bit. The back of your Apple Watch needs to be touching your wrist.

  1. Breathe in Breathe app for 2 min.

  • Press the Digital Crown to go to the Home screen, then open the Breathe app.

  • Turn the Digital Crown to set the session's length. We recommend to breath for 2 min for the best result.

  • Tap Start when you're ready. Breath normally, ignoring the instructions.

  • Remember to stay still while you breathe. The data may not be saved if you move while breathing.

  • Wait until the session ends and your watch taps you twice and chimes. When you're done, you can see your heart rate.

4. We'll show your stress result as soon as the data, that your Apple Watch recorded becomes available in Apple Health.

Usually it takes about 30 sec to get the data. To speed up the process we highly recommend to lock and unlock the screen of your iPhone right after you finish breathing.

5. Still no data available?

  • close Breathe app at your Apple Watch. Press side button at your Apple Watch. Find Breathe App and swipe left to close;

  • re-open Breathe app and breathe one more time for 2 min following the instructions in paragraph 3;

  • For more information visit here for more information.

Anyway, if you are unable to get the results for some reasons - contact us and will try to find the best way to resolve the issue.

Contact us at dev@activeace.app - we answer all your emails.