Do you store any user data?

No, we don't store any user data and take your privacy very seriously. Our extension only asks for access to your webcam. When you use the form detection feature, no video recordings are stored. You also have the option to turn off the form detection feature and webcam.

Can you see the content on my screen?

No, our extension does not and cannot change or read anything on your screen.

How does the exercise form detector work?

We used a machine learning model called PoseNet and trained our own machine learning model with over 4,000 images of 15 different stretches. Our model classifies which stretch you are doing, as well as the probability you're actually doing that stretch. Using this probability data, we show you the percent accuracy, or "form score", of your stretch.

Before using the form detection feature, we ask for your permission to your computer's webcam. The form detector uses your webcam footage to track x,y positions on your body.

Why didn't the exercise form detector do what I wanted?

Did the exercise detector not work as you expected? Our algorithm isn't perfect! A limitation of our form detector was that we trained our machine learning model with biased data - images of ourselves doing the stretches. However, we use pose estimation with the PoseNet model to correctly detect anyone's body regardless of body type, gender, or race. This allows for our model to be more flexible in spite of the biased training data. We hope to diversify our training data in the future.

If you'd like to help improve it, please visit our contact page.

How did you make the extension and how can I contribute?

We're an open source project. View and remix our code here. To contribute, email us! Feel free to also make a pull request on our GitHub with your changes and we'll review them.