Know what's in the room
Hidden cameras, AirTags, and devices you were never told about all give off signals. RF Signal Detector turns your iPhone into a scanner that finds them, names them, and helps you check every one.
Free to try · scan results stay on your device
Four ways to sweep a room
Each scan covers what the others can't. Together they cover the ways consumer surveillance devices actually work.
Bluetooth scan
Lists every Bluetooth device around you, including AirTags and trackers that shouldn't be there, with distance as you move.
Wi-Fi network scan
Shows every device connected to the network you're on. A camera streaming from the bookshelf shows up here.
Lens finder
Uses your iPhone camera to catch the glint of hidden lenses and infrared light some cameras give off in the dark.
Guided sweep
A room-by-room checklist built from how professionals sweep: smoke detectors, alarm clocks, vents, chargers, mirrors.
Two minutes to peace of mind
1. Scan
Open the app and run the Bluetooth and network scans. Every device near you appears in seconds.
2. Identify
Each device gets a name and type. The ones worth a second look are flagged so you know where to focus.
3. Verify
Use the lens finder and sweep checklist to physically check flagged spots, and know for certain.
Learn to sweep like a professional
Honest, step-by-step guides. No fear-mongering, no fake gadget reviews, just what works.
Do hidden camera detector apps actually work?
Do hidden camera detector apps work? An honest, physics-based look at what phone hardware can and cannot detect, and which app claims are snake oil.
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Read the guideFound a device you don't recognize?
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Questions people ask
How does RF Signal Detector find hidden cameras?
It combines three methods that phones are genuinely good at: a Bluetooth scan that lists every Bluetooth device and tracker around you, a Wi-Fi network scan that lists every device connected to the local network, and an infrared lens finder that uses your iPhone camera to spot hidden lenses. A guided sweep checklist then walks you through the spots devices are most often hidden.
Is RF Signal Detector free?
The app is free to download from the App Store and comes with a free trial, so you can run a full sweep of a room before paying anything.
Does the app work in an Airbnb or hotel?
Yes. In an Airbnb, the Wi-Fi scan lists every device on the rental's network, including cameras. In hotels, where Wi-Fi is shared, the Bluetooth scan and lens finder do the heavy lifting. The sweep checklist adapts to both.
Can any app detect every hidden device?
No, and you should distrust apps that claim otherwise. Phones cannot see wired cameras on a separate network or cellular bugs. RF Signal Detector covers the common cases honestly, Wi-Fi cameras, Bluetooth trackers, and visible lenses, and its checklist covers the physical search for the rest. Read our honest take in do hidden camera detector apps work.
The scan takes two minutes.
The doubt lasts all night.
Next time a room feels off, don't guess. Scan it.
Get RF Signal Detector free