Detect Hidden Cameras and Microphones Simulator is a free Android app developed by 4 Tech Solutions. As the name suggests, the app helps you to detect potential hidden cameras and microphones in your surroundings. With the advancement of technology, spy cameras and microphones have become so small that they are not easily recognizable. This app uses the magnetometer sensor of your phone to find out the magnetic value of the surroundings, and when the magnetic field is higher than usual, the app alerts the user to check the nearby area for any surveillance device.

The app is very easy to use. You just have to open the hidden device detector section of the app and move your phone in the surroundings. When it tells you that magnetic field is higher than usual, you just have to check the area manually as it may indicate the presence of an electronic bug or spying device. This app can be used as a hidden microphone detector to check your living room, hotel room, rest room or changing room for any hidden devices. The app also provides tips for manual detection of electronic devices in the 'Tips for manual detection' section of the app.