I have some suggestions to improve this great application.

Include the option to record the collected data to be exported to format ".csv" and can analyze with external applications such as spreadsheets, etc.

It would be very helpful if it could also record the GPS data of the detected networks. This would enable audit coverage maps, etc.

Another option to make a coverage map but this time indoors, where GPS is not very useful, would be making use of the accelerometer. Defining the epicenter of issue we can move with the N900 tracking and calculating the distance we have traveled.

This application lets users hallucinating other platforms, is very good.