A free app for Android, by Bestie Ara.
Hidden Camera Detector (Spycam) is an app-based camera that allows you to detect hidden cameras and listening devices. It detects infrared (IR) light that is invisible to the human eye. It is built into the mobile phone, so there is no need to purchase extra hardware or software. It works even if the phone is switched off and is only enabled when the camera is focused and pointed at the area you want to monitor.
Once a white light is detected, it indicates that a hidden camera is present. You can then view the images from the camera and/or activate an alarm to alert you when a hidden camera or a listening device is present.
You can use this app to detect hidden cameras that are present at home, work, school, or in public places. It detects hidden cameras with both video and audio capabilities.
You can use the same app to detect hidden cameras in places such as:
Nearby homes or offices
Restaurants, coffee shops, hotels
Schools
Shopping malls
Stores
Shopping centers
You can also use it to detect hidden cameras near you. This is useful in public places such as restaurants, malls, coffee shops, parks, airports, and many other places where it is likely to be used to spy on you.