Compared with the same type of apps, "Flip Silent" is easy to understand and use, as long as you turn "Flip Silent" on, regardless the phone screen up or down, just flip it, the phone will become silent. Do not worry about missing calls.
Widget: Touch a simple button, you can turn Flip Silent on/off.
*Silent effect: when a call comes in, regardless the phone screen up or down, as long as you flip the phone, it would become silent.
* Automatic recovery: After the call ends, the phone ring will get back to the original settings.