A free program for Android, by Maxters.
If you want to cast your wireless interface to your monitor, or put it into that mode, then you can use this app - that is, if your device supports monitor mode. This app is a GUI (graphical user interface) for airmon-ng script.
It features a dossier of wifi adapters. It also can start a monitor interface, as well as stop it. You can apply auto refresh on your usb device when you connect it.
This is not a free app. It is no longer being maintained because of the reviews - but that is because this is an advanced platform for wireless audit experts. It will not work for those who are new to the whole concept.
