The app requires two permissions “Display over other apps” and “Usage access”. The only data the app collects through the first permission is the timing patterns of your taps. The app cannot record where you tap or the content of your screen in any form. The app will not display anything on your screen when you’re not using it. The only data the app can collect through the second permission are the names of the apps and how often you use them. The app does not record any content from your apps or any other details.
To help us deliver even more precise insights into your sleep patterns, we recommend granting the permission for “Physical Activity”. This permission allows access to the type of activity, such as walking, running, traveling by car, including the raw data from the respective sensors such as accelerometer, pedometer, gyroscope. With this permission, the app cannot track where you are.