TraceLens
Hidden camera finder
Support · Updated 26 October 2026
Hidden camera finder
Support · Updated 26 October 2026Need a person? Write to appwells31@gmail.com. Say what you were doing, what happened instead, and which iPhone and iOS version you have. We answer every message.
Tap Start room check, tell the app which areas the room has, and follow the instructions on screen and in your ear: where to point, when to slow down, when to hold still. The check takes you round the ceiling, walls, desk, bed and bathroom and keeps a record of what you covered. Lights off and curtains closed give the torch sweep its best chance.
Scan now runs the camera recogniser on its own. Devices lists what is on the Wi-Fi you joined and the Bluetooth gadgets nearby. Magnetic reads the magnetometer near an object. Changing room is a one-minute preset for mirrors, walls, hooks and fixtures.
Your first look at each tool is free: one Room check, one Scan now, one Devices look and one Magnetic look. TraceLens Pro runs every check as often as you like and adds Records history, report export, visit comparison and object photos.
Two different recognisers look for camera shapes: dome and bullet cameras, small lens units, webcams. A shape is marked once it has been seen clearly or held steady, and a faint shape needs both recognisers to agree. It can miss a camera that is very small, very far away or behind tinted glass, and it can be fooled by lens-like objects such as door knobs. Treat a mark as something to look at, not as a verdict.
Under the torch, a lens throws a small, steady point of light back at you. So do screws and glossy plastic, which is why the app blinks the torch and asks you to change angle: a lens reflection stays put, a reflection off a flat surface moves.
In a dark room the front camera can see some infrared illuminators as a faint glow. Not every iPhone sees them equally well, so the app offers a remote-control self-test first.
Cameras that stream over Wi-Fi may announce a camera-type service. Many hotel and rental networks isolate guests from each other, in which case only the router is listed and the app says so: an empty list on such a network means nothing. Most Bluetooth cameras go silent after setup.
A change relative to your own baseline, close to an object, is weak evidence that there is electronics inside. Speakers, magnets and steel frames cause the same change.
Button, badge and pen cameras record to a memory card and have no radio and no heat signature. No phone can find them. The Learn tab explains what to look for with your eyes.
That is a prompt, not a result. Hold still on it: if the shape holds, it is saved as an object for you to investigate; you can then mark it explained. Glossy knobs, round sensors and smoke-detector windows are the usual culprits.
The network isolates guests. The app notes this in the report so a quiet result is not mistaken for a clean one.
The sweep analyses the camera several times a second. The app slows down when the phone reports heat; a short break helps.
Settings → Language. "System" follows your iPhone; or pick any of the bundled languages and the app, including spoken instructions, switches at once.
On your iPhone only. See the privacy policy. Settings → Delete all inspection data removes everything.
TraceLens Pro is available weekly, monthly, every six months, yearly (with a 3-day free trial) or as a one-time lifetime purchase. Purchases are made and managed through your Apple Account:
TraceLens is an inspection aid. No app can guarantee that a room is free of hidden cameras, and this one never says so. If you find something, do not touch it: photograph it, cover it, and contact the host, the venue or the police.