The second hand ticks when the app is started. When the app is put in the background, it stops working. That's all there is to it. Have you ever wanted a sound or reference for second intervals during exercise, stretching, or doing other things? If you say so, this is the app for you. We hope this app will be useful in your life. Please note that the screen will remain lit while in the foreground, so be careful of battery consumption. This app uses the internet access to display the ads and analyze. Exception clause Sounds and second hand may not work properly depending on the environment, such as if your phone is running slowly. We assume no responsibility whatsoever for any damages resulting from the use of this app.