See http://fenyo.net/network3dwifitools to download binaries, get the user's manual, understand how it works behind the scenes, ...
See http://fenyo.net/network3dwifitools/new-credits.html to see credits and licenses of third party content.
This app is developed with the Swift language (~90% of the app) and the C language (~10% of the app). The master GUI of the app is developped with UIKit. The heat map builder, the node informations view and the log panel are developped with SwiftUI. The smooth dynamic rolling chart is developped with SpriteKit.
