Hidden Camera Detector is a free Android app developed by Daniel25 in the Utilities & Tools category. As the name suggests, this app helps users find hidden cameras or spy cameras. It offers three detection features to assist users in identifying potential hidden cameras.

The first feature is the electronic device detector, which requires users to approach the suspicious area within 30 centimeters (or 12 inches) with the app. If there is a response from the sensor, it indicates the presence of an electronic device in that area.

The second feature is the infrared/negative detector, which helps identify invisible spots or holes that may be indicative of hidden cameras.

The third feature is the combination of the electronic device and infrared/negative detectors, providing users with a more proactive and convenient detection method.

It's important to note that the app's detection responses do not guarantee the presence of a hidden camera. Direct inspection by an expert is necessary for confirmation. The app should be used as an aid for detecting hidden cameras and not as a definitive solution.

Additionally, Hidden Camera Detector now includes a convenient internet speed measurement function. This app utilizes GPUImage from CyberAgent, Inc. and GraphView, both of which are licensed under Apache License Version 2.0.