A free program for Android, by UpKoders.

EMF Detector – Radiation Meter App is a free, handy tool that can detect and measure the level of electromagnetic radiation that is emitted from electronic devices such as mobile phones, laptops, and other electronic equipment. It is a handy tool that can be used to detect and measure the level of electromagnetic radiation that is emitted from electronic devices.

To use the EMF Detector App, you just have to move your phone around the electronic device to detect the level of electromagnetic radiation.

The app gives the magnetic field reading in microTesla (µT) which is equal to 10 mG (milligauss).