Sonar is the app to detect hidden cameras and spy cameras in hotel rooms, Airbnbs, fitting rooms, and Vrbos. Combine Wi-Fi network scanning, lens scanning, and Bluetooth to locate hidden cameras in seconds — all processed on your phone, no account and no cloud required.
Sonar combines signals from cameras, networks, Bluetooth, and magnetic fields to increase the confidence of each finding. No single method is 100% conclusive—that's why we combine them all and always show the level of certainty.
It performs a true port scan on the local network in search of connected IP cameras and DVRs — the most common method for locating hidden cameras in Airbnbs and hotels that share the same Wi-Fi network as the guest.
It uses the cell phone camera to detect the characteristic glint of lenses hidden in objects such as smoke detectors, electrical outlets, clocks, and picture frames — with photographic evidence.
It identifies nearby Bluetooth devices that may indicate hidden spy cameras or microphones transmitting a signal, listing each device found in the scan.
Use your phone's magnetometer to detect variations in magnetic fields, which often indicate electronic components hidden behind walls, mirrors, or furniture.
Everything you need to inspect an environment quickly and with complete privacy.
A simple step-by-step tour of the environment: camera, Wi-Fi, Bluetooth, and magnetic sensor, all in a single guided inspection.
No account, no registration, no cloud. The inspection data never leaves your device — there's no server to leak it.
Keep a record of each inspection and export a complete PDF report to take as proof or share.
No false alarms: each result shows the degree of certainty (low, medium, high) and the explanation behind it.
Designed for check-in: inspect your room, bathroom, and living room in just a few minutes before unpacking.
No ads and no third-party tracking SDKs. The app does not collect analytics about your usage or your device.
Since all processing happens on the device, most scans work even without internet access.
A guided checklist helps ensure you don't forget any common points for installing hidden cameras in the environment.
Without technical jargon: each screen explains what is being checked and what that means in practice.
Actual screenshots of the app during a full scan: home, Wi-Fi network, lens scanner, privacy, and PDF report.
Reports from people who used sonar to inspect hotel rooms, Airbnbs, and fitting rooms.
"I use it every time I arrive at a new Airbnb. The Wi-Fi scanner found a nanny cam that the host hadn't even mentioned was in the room."
"I travel a lot for work and it's become a habit to run the scan as soon as I enter my hotel room. Quick, simple, and it doesn't require any registration."
"I liked that there wasn't a pre-set response like 'camera found'. The app shows the confidence level and explains why, which gives much more confidence in the result."
"The PDF report was useful for documenting a situation in a store fitting room. It took less than two minutes to complete the entire inspection."
"I was relieved to know that nothing I scan leaves my phone. I don't ask for an account, I don't ask for an email, and it even works without internet."
"I recommend it for solo travelers. It's become part of my check-in routine, along with testing the room's Wi-Fi."
Look for objects with small holes or reflective lenses (smoke detectors, electrical outlets, clocks, picture frames), check devices connected to the local Wi-Fi network, and observe unusual reflections with your cell phone's flashlight. Sonar automates these three checks into a single guided scan.
Yes. Sonar offers Wi-Fi network scanning, lens flare scanning, Bluetooth, and magnetic detection without requiring registration or subscription to use essential features.
Sonar scans addresses connected to the same Wi-Fi network and checks ports commonly used by IP cameras and DVRs. When it finds a suspicious port, it displays the address and the confidence level of the finding.
The lens reflection scanner, magnetic detector, and Bluetooth scan all work offline, as all processing takes place within the device itself. Only the Wi-Fi network scanner requires a connection to the local network being inspected.
No. No single method is conclusive. That's why sonar always shows a confidence level (low, medium, or high) instead of definitively declaring an environment as "safe" or "camera found".
Yes, the app was designed for any temporary environment where you have a legitimate right of access: hotel rooms, Airbnb and Vrbo accommodations, and store fitting rooms.
Coming soon to iPhone (App Store) and Android (Google Play).
Sonar