Comparison

Sentry vs Wi

Price, ratings, monetisation and update history for both apps, side by side — 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 — 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 — infrared light, magnetic fields, bright reflections, and the devices on the network around you — 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 • Infrared (IR) Scan — your camera sensor can show infrared light, the kind night-vision cameras emit in the dark (as do remotes and many sensors) • Magnetic Field — reads spikes near powered electronics, including devices with no Wi-Fi • Lens Reflection Scan — on-device image analysis flags bright, lens-like glare for you to look at • Wi-Fi Network Audit — lists devices on the network you're joined to and flags names matching known camera brands • Bluetooth Scan — 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 — 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 • Travelers in hotels, motels and Airbnbs • Renters checking a new place • Changing rooms, fitting rooms and restrooms • 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: • Sentry Pro is available as a Weekly, Yearly or one-time Lifetime purchase. Prices are shown in the app and may vary by region. • 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. • 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

Wi

Features
Read full description

Find the places where your connection works better. Walk around with your iPhone and compare Wi-Fi or mobile connectivity along a colored 3D trail in the camera view. The color changes continuously as measurements update. Pause whenever you need to; the recorded trail stays until you clear it or change networks. For Wi-Fi, the app checks replies from the local router: latency, unanswered requests and jitter. For mobile data, it combines the iOS connection-quality estimate, when available, with small internet probes to Cloudflare, approximately once per second. You can choose Auto, Wi-Fi or Mobile network. Internet latency is not radio signal strength. The app does not measure download speed, locate a router or cell tower, or measure your distance to one. Gray sections mean there is no recent measurement. A router may block ping, so unanswered requests alone do not prove weak reception. Free, with no ads, in-app purchases or account. Camera images and the room map are processed on your iPhone; the app does not record photos or video or send room data to the developer. In mobile mode, Cloudflare receives your source IP address through the probes. Camera and local-network access are required. Location permission is optional and only used to show the Wi-Fi name. Requires an ARKit-compatible iPhone with iOS 17 or later.

Screenshots

Sentry4 screens
Wi3 screens

Verdict

The call

The clearest difference is in-app purchases: Wi at none against Sentry's 4. Wi also leads on update cadence (weekly vs fortnightly). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sentry sells 4 in-app purchases, starting at $9.99 per 7 days. Wi asks for nothing beyond the download.

UpkeepUpdate frequency

Sentry ships an update fortnightly, Wi weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 4 level
Sentry versus Wi: the parameters behind the verdict, then further details
ParameterSentryWi
PriceFreeFree
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size16 MB3 MB
Age rating4+4+
DeveloperMD. NASAR UDDIN REDOYVIBE AI, MCHJ

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
None

Wi

No in-app purchases

Questions

Is Sentry free?
Sentry is free to download, with in-app purchases available.
Is Wi free?
Wi is free to download, with no in-app purchases.
Do Sentry or Wi have ads?
Neither Sentry nor Wi shows ads.
Which is updated more often, Sentry or Wi?
Sentry ships an update fortnightly, and Wi weekly. Most recently, Sentry was updated on November 5, 2026 and Wi on October 31, 2026.

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