Lens Finder: Spy Cam

Lens Finder helps you locate a hidden camera lens with your own eyes. A lens is curved glass, and glass bounces light straight back toward its source. Sweep a room with your phone's flashlight and camera, and Lens Finder highlights the tiny, sharp glints that stay put while everything else moves, so you know exactly where to look. If you need a spy cam finder for a hotel room, Airbnb, bathroom or fitting room, this is the optical approach, built around the lens itself. BUILT AROUND THE LENS VIEW - Flash-reflection mode: turn on the flash, move slowly and watch the live view. Lens Finder marks small, bright points that remain steady while the scene changes, which is how a lens tends to behave. - Infrared view: some night-vision cameras emit IR light that a phone camera can sometimes show as a faint glow. Switch to IR mode and scan dark corners and device edges. - Hiding-spot checklist: a room-by-room list of the places lenses hide, such as smoke detectors, clocks, speakers, USB chargers, plants, shelves and picture frames, each with a tip on what to look for. - Steady-glint filter: a point is only highlighted when it stays small, round and bright across several flash cycles, so a passing reflection is ignored. Re-check it from another angle: a real lens keeps reflecting; a shiny screw or sticker usually does not. - High-sensitivity mode (Pro): picks up smaller, fainter glints when you need a closer look. SUPPORTING CLUES - Magnetic field meter: shows magnetic changes near electronics, so you know which object deserves a closer look. Metal and speakers also trigger it. - Bluetooth and Wi-Fi quick check: lists nearby trackers (AirTag, SmartTag, Tile) and network devices that look like IP cameras. Read-only; it never logs in to any device. - Guided sweep: combines the checks in one pass and lists what was checked, what was found and what is new since your last visit to the same place. - Simple report: save the result and export it as a PDF (Pro). - Likelihood result: None found, Low, Medium or High. HOW IT WORKS 1. Dim the room lights and open the lens view. 2. Turn on the flash and sweep slowly along shelves, outlets and corners. 3. Note any glint that stays in the same place as you move. 4. Walk to another spot and check that point again from a new angle. 5. Switch to IR view for dark areas, and run the quick checks if you want more clues. TIPS FOR BETTER GLINT SPOTTING - Work in a dim room and keep the phone steady, then move a step to the side and look again. - Check eye level and every angle: lenses can face the bed, the shower area or a desk. - Cover each area twice, once with the flash and once in IR view. HONEST BY DESIGN Lens Finder never says a place is "safe". Reflections also come from glossy screws, jewelry, glass and many harmless objects, so a glint is a place to look, not proof. It cannot find pinhole lenses that do not reflect well, cameras that are switched off, radio signals or microphones. Combine it with a careful visual search. If you feel unsafe, leave and contact local authorities. PRIVACY Camera frames are analysed on your device and never saved or uploaded. Your location is not stored. No ads. Anonymous usage statistics and crash reports (Firebase Analytics and Crashlytics) help us fix problems; you can turn both off in Settings. Privacy policy: https://hiddencam.web.app/privacy How each check works: https://hiddencam.web.app/blog/how-hiddencam-works FREE AND PRO The lens and IR views are free. Your first full guided sweep is free too. Pro adds unlimited guided sweeps, high-sensitivity mode, the AI inspector, PDF reports and unlimited history, as a monthly or yearly subscription (yearly includes a 3-day free trial) or a one-time lifetime purchase. Manage or cancel anytime in Google Play.