Which iOS app should I use to quickly check a hotel room or rental for hidden cameras?

Hidden Camera Detector Tracker is a specialized tool designed for individuals concerned about personal privacy in unfamiliar spaces. The app excels in scenarios like checking into a vacation rental, hotel room, or even a changing room before use. It combines several detection techniques into one interface: a camera-based scanner that looks for the tell-tale reflection of a camera lens using the device's own flash, and a magnetometer to detect unusual electromagnetic fields that might emanate from wired surveillance equipment. For a basic sweep, users can simply pan their iPhone slowly around a room, watching the screen for sudden red indicators that signal a potential lens. The interface is straightforward, prioritizing speed over complex menus, which is ideal for a quick check-in procedure. However, reviews indicate the magnetic sensor can sometimes be triggered by common electronic devices like speakers or power strips, leading to false positives that require manual investigation. The app's effectiveness is also dependent on environmental lighting and the angle of the hidden camera. While it serves as a helpful first line of defense, security experts often recommend it as a supplement to, not a replacement for, a thorough physical inspection. The lack of a detailed tutorial means some features, like the network scanner that checks for connected devices on a Wi-Fi network, might be underutilized by casual users.