Comparison

Sentry vs Hidden Camera Detector

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Sentry

Features
Read full description

A room-scanning aid for your phone. Hidden cameras get concealed in everyday objects โ€” smoke detectors, USB chargers, alarm clocks, vents and mirrors. Sentry uses the sensors already in your phone to measure five different signals in a room and shows you every reading, so you know which spots are worth inspecting by hand. Sentry does not identify cameras. It measures signals โ€” infrared light, magnetic fields, bright reflections, and the devices on the network around you โ€” and each of those signals can come from ordinary electronics just as easily as from a camera. No app, and no dedicated hardware, can find every hidden camera. Sentry is a tool that guides a careful manual check; it is not a guarantee and should never be treated as one. WHAT SENTRY MEASURES โ€ข Infrared (IR) Scan โ€” your camera sensor can show infrared light, the kind night-vision cameras emit in the dark (as do remotes and many sensors) โ€ข Magnetic Field โ€” reads spikes near powered electronics, including devices with no Wi-Fi โ€ข Lens Reflection Scan โ€” on-device image analysis flags bright, lens-like glare for you to look at โ€ข Wi-Fi Network Audit โ€” lists devices on the network you're joined to and flags names matching known camera brands โ€ข Bluetooth Scan โ€” lists nearby advertising devices with an estimated distance HOW TO USE IT 1. Tap Scan and pan your phone slowly around the room 2. Watch the live readings โ€” a glow, a highlighted box or a signal spike 3. Go to each flagged spot and inspect it with your own eyes and hands The third step is the important one. Sentry tells you where to look; it cannot tell you what is there. BUILT PRIVATE Sentry works entirely on your device. No account. No uploads. No tracking. Your scans and any photos you save never leave your phone. WHO IT'S FOR โ€ข Travelers in hotels, motels and Airbnbs โ€ข Renters checking a new place โ€ข Changing rooms, fitting rooms and restrooms โ€ข Meeting rooms and private offices SENTRY PRO Sentry Pro unlocks all 5 scan methods, unlimited full-room guided sweeps, and a private scan history. Choose a one-time Lifetime purchase, a Yearly plan, or a flexible Weekly plan. Cancel anytime. IF YOU FIND SOMETHING If you believe you've found a real device, stay calm, don't touch it, document it, and contact the property and your local authorities. ---------- Subscription details: โ€ข Sentry Pro is available as a Weekly, Yearly or one-time Lifetime purchase. Prices are shown in the app and may vary by region. โ€ข Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. โ€ข Manage or cancel anytime in your App Store account settings. Any unused portion of a free trial is forfeited when you buy a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/sentryhiddencameradetector/home Questions or feedback? developer.nasar416@gmail.com

About

Hidden Camera Detector

Features
Read full description

Hidden Camera Detector helps you check hotel rooms, rentals, and unfamiliar spaces for signs of hidden cameras and covert listening devices, using your iPhone's camera, Wi-Fi, and magnetometer. FOUR SCAN MODES โ€ข Infrared Scan โ€” spots the lens glint hidden camera optics reflect under IR light. โ€ข Network Scan โ€” lists Wi-Fi devices and flags ones commonly used by remote-access cameras (VNC, SSH). โ€ข Magnetic Scan โ€” detects magnetic field anomalies from hidden electronics or wiring. โ€ข Full Scan โ€” runs all three in one guided sweep with a combined risk score. Mark network devices as trusted or suspicious, and review a history of every room you've checked. BE HONEST ABOUT THE LIMITS No app can guarantee detection of every hidden camera or listening device. Hidden Camera Detector is a helpful screening tool, not a substitute for a professional sweep. Network Scan only sees devices that advertise themselves over Wi-Fi. SUBSCRIPTION Pro unlocks all four scans plus unlimited history. Choose monthly or annual. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends; manage anytime in your Apple ID settings. Privacy: https://denovate.app/apps/hiddencameradetector/privacy Terms: https://denovate.app/apps/hiddencameradetector/terms Support: https://denovate.app/apps/hiddencameradetector/support

Screenshots

Sentry4 screens
Hidden Camera Detector4 screens

Verdict

The call

Sentry and Hidden Camera Detector are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Sentry sells 4 in-app purchases, starting at $9.99 per 7 days and Hidden Camera Detector sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Sentry versus Hidden Camera Detector: the parameters behind the verdict, then further details
ParameterSentryHidden Camera Detector
PriceFreeFree
Update frequencyFortnightlyโ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.017.0
Further details โ€” not scored
Size16 MB12 MB
Age rating4+4+
DeveloperMD. NASAR UDDIN REDOYDENOVATE LTD

In-app purchases

4 purchases

Sentry

Subscriptions2
  • Sentry Pro (Weekly)$9.997 Days
  • Sentry Pro (Yearly)3 Days trial$59.991 Year
One-time2
  • Sentry Pro Lifetime$99.99
  • Sentry Pro Lifetime$149.99
2 purchases

Hidden Camera Detector

Subscriptions2
  • Pro Monthly$4.991 Month
  • Pro Annual$19.991 Year

Questions

Is Sentry free?
Sentry is free to download, with in-app purchases available.
Is Hidden Camera Detector free?
Hidden Camera Detector is free to download, with in-app purchases available.
Do Sentry or Hidden Camera Detector have ads?
Neither Sentry nor Hidden Camera Detector shows ads.

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