Comparison

Sentry vs Unspy

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

Unspy

Features
Read full description

Unspy helps you check a room, a rental or your own home for hidden cameras, unknown trackers and unfamiliar devices - right from your iPhone, with everything processed on-device. HIDDEN CAMERA DETECTOR - Lens Finder: shine the torch and look for the tell-tale glint of a camera lens - Network Radar: see every device on the Wi-Fi you are connected to, including cameras that hide in plain sight - Device names, IP addresses, open ports and a quick risk score for each one TRACKER & SMART TAG FINDER - Bluetooth Sweep lists nearby Bluetooth devices, including possible tracking tags - Sorted by signal strength so you can walk closer and narrow down where a device is MAGNETIC SENSOR - The magnetometer highlights spikes caused by electronics hidden in walls, vents and furniture BUILT FOR TRAVEL - Hotels, rentals, dressing rooms, offices and cars - Works on any Wi-Fi you join; nothing is uploaded and there are no accounts UNSPY PRO Unspy Pro unlocks every tool with a choice of two auto-renewable subscriptions: weekly or monthly. Payment is charged to your Apple Account at confirmation of purchase. Each plan renews automatically unless canceled at least 24 hours before the end of its period. Manage or cancel anytime in your Apple Account settings. Prefer to pay once? Unspy Pro Lifetime unlocks every tool forever with a single one-time purchase - no subscription. Unspy is an aid, not a guarantee: no phone can detect every device. If you believe you are being recorded or tracked, contact local authorities. Privacy Policy: https://akbaralikhasanov-2000.github.io/sentri/privacy.html Terms of Use (EULA): https://akbaralikhasanov-2000.github.io/sentri/terms.html

Screenshots

Sentry4 screens
Unspy4 screens

Verdict

The call

Sentry and Unspy are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases 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 Unspy sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sentry ships an update fortnightly, Unspy every 11 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

ScorecardNo meaningful differences
Sentry versus Unspy: the parameters behind the verdict, then further details
ParameterSentryUnspy
PriceFreeFree
Update frequencyFortnightlyEvery 11 days โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.017.0
Further details โ€” not scored
Size16 MB10 MB
Age rating4+4+
DeveloperMD. NASAR UDDIN REDOYAkbarali Xasanov

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
4 purchases

Unspy

Subscriptions3
  • Sentri Pro Weekly$4.997 Days
  • Sentri Pro$9.991 Month
  • Unspy Pro Yearly3 Days trial$29.991 Year
One-time1
  • Unspy Pro Lifetime$39.99

Questions

Is Sentry free?
Sentry is free to download, with in-app purchases available.
Is Unspy free?
Unspy is free to download, with in-app purchases available.
Do Sentry or Unspy have ads?
Neither Sentry nor Unspy shows ads.
Which is updated more often, Sentry or Unspy?
Sentry ships an update fortnightly, and Unspy every 11 days. Most recently, Sentry was updated on November 5, 2026 and Unspy on November 6, 2026.

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