This bluetooth utility accomplish a very simple but useful task: discover Blueooth devices and report their RSSI.

RSSI stands for Received Signal Strength Indicator and can be used to have an idea of how fare is the device in free space or how much power is received in an indoor environment.

In free space condition you could even calculate the distance between your device and the discovered device by using a quadratic relationship for the EM field.

The app is based on the Amarino Toolkit which is being supported by a large community of developers and thus provide very high reliability.