Thanks the front camera the app will record the movie with shocking reaction of your friend. The app can record the screen when you play. Remember, you can turn it off before playing, or in settings. Now you can tell the stories about that to others and shoow the movie. Now you can play it or share it on social media.
In new version you can turn off camera before using app. You dont need to give any permission if you don't want to record your screen or the view from front camera.