There are wardriving apps that will log all APs your phone can see and plot them as points on a map.

wardriving app

There are "site survey" applications that will make a heatmap of your particular AP, where you give it a blueprint of your building and then manually point out where you are on the blueprint as you walk around:

heatmap of a single AP

What I would like is an app that logs all APs, along with the GPS location of each measurement, and makes a heatmap (such as an overlay on a Google Map) of how strong the average/strongest Wi-Fi activity is at each point on the map, to compare how busy the 2.4 GHz environment is in different places.


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