Anti-Spy is a free Android tool developed by qinwei that aims to help you detect any hidden cameras in a room. The app provides two main features: wireless camera detection and camera red dot detection.

The wireless camera detection feature allows you to connect to a wireless WiFi network and identify all suspicious devices in the room with just one click. The app provides a detailed report on each device found, allowing you to be aware of what is happening around you.

The camera red dot detection feature helps you identify whether there is a hidden camera in real-time. This feature works best when the room lights are dimmed and the phone is very steady.

It is worth noting that the app offers an optional auto-renewing subscription to access Anti-Spy Pro. The subscription provides more advanced features and starts at $6.99 per week, $19.99 per month, or $39.99 per year, with the price depending on your country.

Overall, Anti-Spy is a useful tool to help you detect any hidden cameras in a room. It is easy to use and provides a detailed report on all devices found. However, the app's subscription model may not be suitable for everyone.