Sonar vs Bug Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sonar
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SONAR: HIDDEN CAMERA AND TRACKER DETECTOR Sonar helps you check for hidden cameras, hidden microphones, and Bluetooth/Wi-Fi trackers, a privacy inspection support tool with infrared, Wi-Fi network, and Bluetooth scanning. Whether you're in a motel room, hotel, Airbnb, locker room, public restroom, fitting room, car, or your own luggage, Sonar helps you inspect the space in minutes. IMPORTANT: no phone app can guarantee with certainty that a space is free of hidden cameras. Sonar is a support tool, each finding comes with a confidence level so you can physically check the spot it flags. Always use it alongside a manual inspection. DETECTOR FEATURES Infrared scanner Point your phone's camera and look for the telltale reflection of hidden spy camera lenses, a common sign in cameras disguised as a button camera, pen camera, charger, smoke detector, or clock. Works best in a dark room and doesn't replace a physical check. Wi-Fi network and Bluetooth device detection Sonar scans the local Wi-Fi network and nearby Bluetooth devices to flag devices with characteristics of connected cameras or trackers. Each result shows a confidence level, not a definitive confirmation. Bluetooth tracker detector Flags signals from Bluetooth trackers nearby: in your car, bag, luggage, or personal belongings, as support against unwanted tracking during travel and everyday life. Guided sweep A practical checklist walks you through spots where cameras and microphones are commonly hidden: outlets, smoke detectors, picture frames, mirrors, chargers, clocks, and more, so you can physically inspect each one. Clear, straightforward results See the confidence level of each finding, with real-time visual indication, no technical jargon. WHY USE SONAR Works offline Simple interface anyone can use Fast: full sweep in just a few minutes No complicated sign-up GREAT FOR - Motel, hotel, and Airbnb stays - Short-term rentals and vacation homes - Locker rooms, gyms, and public restrooms - Store fitting rooms - Checking your car and luggage for trackers - Confidential meetings and work spaces YOUR PRIVACY COMES FIRST Hidden cameras and trackers are more common than you'd think. Sonar exists to give you a support tool for checking your space, simple and accessible, always as a complement to your own inspection, never as an absolute guarantee. WHERE YOU CAN USE SONAR Hotel room · Motel room · Airbnb · Vacation rental · Bed and breakfast · Hostel · Resort · Spa · Sauna · Public restroom · Gym locker room · Pool locker room · Club locker room · Store fitting room · Lingerie fitting room · Event or theater dressing room · Meeting room · Shared office · Coworking space · Rental car · Uber or taxi · Rented beach house · Vacation cabin · Guest room at someone else's home · Doctor's office or clinic · Short-term rental property THE GUIDED CHECKLIST COVERS COMMON SPOTS LIKE Smoke detector · Wall clock · Desk clock · Alarm clock · Phone charger · USB wall adapter · Power strip · Wi-Fi router · Bluetooth speaker · Wall art · Picture frame · Mirror · Desk lamp · TV remote control · Teddy bear · Glasses · Pen · Keychain · Fake potted plant · Book on a shelf Download Sonar now and run your first sweep in under 2 minutes. ---------------------------- Terms of Use (EULA): https://sonarcameradetector.com/terms
Bug Detector
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Stakeout is a listening stakeout. You put the phone down, walk away, and come back to a timestamped tape of the steady tones it heard in the near-ultrasonic band — the range above ordinary hearing that a phone microphone can still sample. WHAT IT ACTUALLY DOES There is no live spectrum in this app. No waterfall, no decibel meter, no needle to watch. That is deliberate. A meter tells you about the instant you happen to be looking at it; a tape tells you what happened while you were not in the room. The running screen is a session clock and a log, and the output is evidence with timestamps. TEST YOUR OWN PHONE FIRST Before a session, run the self-test. Stakeout plays 16, 18, 20 and 21 kHz through the speaker, measures what your microphone returns, and prints the measured response for each one. Not a spec sheet copied from somewhere — your handset, in your room, at your volume. Microphone response above 20 kHz varies enormously between phones, so the honest thing is to measure it and show you, rather than promise a flat response nobody can guarantee. THE TAPE Every row is one event: the wall-clock time it started, the frequency, how long it held, and how far above the room's own noise it sat. Times are zero-padded and absolute — never "3 minutes ago" — because a log you might act on needs real timestamps. Tones that stop and restart are folded into one row with a count, so a pulsing source reads as one finding rather than forty. A tone has to hold for at least two seconds to be logged at all. That single rule removes almost everything a room throws at a microphone: a chair scraping, a door, a cough, a passing car. THE UNVERIFIED BAND The region above 20 kHz is drawn differently and labelled unverified, because that is the truth: it sits where phone microphones start to roll off and where your particular handset may hear nothing at all. The self-test is what tells you which side of that line you are on. WHAT YOU GET FREE - The full near-ultrasonic detector, 15 to 22 kHz - Sessions up to 15 minutes - Three saved tapes - The loopback self-test, unlimited - Steady tones in the audible band logged as events WHAT PRO ADDS - Sessions with no time limit, running all night - Every tape kept, not only your last three - Export a tape as plain text, timestamps and all - Detection strictness: loose, standard or strict BEING HONEST ABOUT THE LIMITS A phone cannot scan the radio spectrum. It cannot detect an analogue transmitter, and it cannot find a wired or fully passive microphone — those things emit nothing a microphone can hear. Any app claiming otherwise is selling you a feeling. What a phone can do is listen very carefully, in a band you cannot. A tone in your tape is something worth explaining. It is not, on its own, proof of surveillance — ultrasonic tones also come from motion sensors, some televisions, rodent repellers, cleaning equipment and a surprising number of ordinary appliances. The app gives you the evidence and the timestamps; the conclusion is yours. PRIVACY No account, no sign-up, no analytics and no tracking. Audio is analysed live on the device and is never recorded, saved or uploaded — the tape holds numbers, not sound. The only connection the app makes is the subscription check with the App Store. SUBSCRIPTION Stakeout Pro is $3.99 per week with a 3-day free trial, or $17.99 per year. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. You can manage and cancel your subscription in your App Store account settings. Any unused portion of a free trial is forfeited when you buy a subscription. Privacy Policy: https://leomarston.github.io/manycode-legal/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Sonar at none against Bug Detector's 2. On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Bug Detector sells 2 in-app purchases, starting at $3.99 per 7 days. Sonar asks for nothing beyond the download.
| Parameter | Sonar | Bug Detector |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 52 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Caue Mattos Silvestre | Emine Saridogan |
In-app purchases
Sonar
No in-app purchases
Bug Detector
- Weekly3 Days trial$3.997 Days
- Yearly$17.991 Year









