WiFi Solver FDTD APK a nice andrid apps. When you install this app you can take a floorplan of your house, set the location of a Wi-Fi router, and simulate how the electromagnetic waves propagate. This app uses the 2D finite difference time domain method to solve maxwells equation on a cartesian gird, An example floor plan in built in this apps.
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Screenshots –
File Size – 1.2 MB
Current Version – V2.7
Requires Android – 4.0 and up
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