The Wi-Spy family of products has traditionally solely been a spectrum analyzer. The Wi-Spy DBx is a dual-band spectrum analyzer that captures raw spectrum in the 2.4 GHz and 5 GHz bands.
The Wi-Spy Air is also a dual-band spectrum Analyzer. On top of that, it also has a dedicated WiFi chip that captures WiFi packets. Air Viewer, an application for Android and iOS, uses the spectrum and WiFi data from the Wi-Spy Air and presents this data within the application. This is so Air Viewer can be free of the constraints of what WiFi data Android and iOS provides. Because we have control over what packets we capture and interpret, we are also able to provide more rich WiFi data than we would otherwise be able to provide.