You can use the app to share your Android device's Internet connection with your computer. You can also connect to the Internet in places where you don't have a wireless connection, or where the service is unavailable. 

It's possible to have more than one device connected to the Internet at the same time, and to switch between them. It's recommended to install the app on your Android device and to connect it to the same computer or to another one.

You can also use the app to help you with the daily tasks that require the Internet, such as online banking or email.