Android users now have the ability to make secure audio and video calls directly from their device. These calls are encrypted and have arrived by the way of Silent Circle. The app itself is called Silent Phone. Those interested will be able to find the app in the Google Play Store and while it is free to download, you will actually need to be a Silent Circle subscriber to use it.
Ring, vibrate, silent. Surely that covers every conceivable situation you're ever likely to need as far as sound goes, right? If you'd like a little more customization in your Android alerts, Volume Rocker is here to help. The free app includes five customizable sound profiles that can be activated at any time, just by tapping your Volume Up or Volume Down.