Once you have signed in to your app you can close it and let it run in the background. The app will not require your attention unless needed. You can always check your today progress in the notifications bar widget and click on it to open the Bitwalking app.
The Bitwalking background process requires minimal resources and will not effect your device performances or battery life.
You can terminate the background process anytime by clicking 'Switch Off'.
If you choose to terminate the background process, your app will not work and you will not generate any W$ until you activate the app again.