Comparison

Sentry by RF Code vs RF Signal Detector, Anti Spy

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

Head to head
About

Sentry by RF Code

Continuously monitors remote IT environments, providing real-time video and thermal data. Receive automated alerts for potential threats to prevent costly IT issues.

Highlights
  • Real-time video monitoring
  • Thermal activity tracking
  • Automated threat alerts
  • Failure-tolerant connection
  • Critical asset visibility
Read full description

Know what’s going on in your remote IT spaces without having to be on-site. Sentry is constantly monitoring unmanned, remote IT environments so you don’t have to. With deep intelligence and real-time alerts, Sentry makes it easier to prevent, thwart, or remediate costly IT situations. Key Features: * Critical Asset Visibility: Get live and recorded video monitoring of all your remote IT environments from anywhere at any time. * Thermal Monitoring: Sentry tracks temperature activity. Thermal sensors monitor temperature fluctuations, pinpoint hot spots, and alert you of any spikes. * Failure-Tolerant Connection: With a backup battery, Sentry stays up and running to give you uninterrupted visibility in the face of power failure or an area-wide outage. * Automated, Real-Time Alerts: When something goes wrong, you need to know. Sentry will send an alert when it detects a threat to your remote IT environment. https://www.rfcode.com/sentry

About

RF Signal Detector, Anti Spy

Read full description

RF Signal Detector, Anti Spy turns your iPhone into a pocket counter-surveillance kit. Whether you are checking into a hotel, an apartment rental, a changing room, an office, or your own home, it helps you sweep the space around you for hidden cameras, GPS trackers, listening bugs, and other devices that may be watching or listening. The app brings your iPhone sensors together into one clean instrument console. Run a full sweep of every sensor at once, or open a single detector, watch the live radar and signal meter, and let real-time sound and vibration feedback guide you toward the source of a signal, Geiger-counter style. Main features Magnetic and EMF detector: uses the built-in magnetometer to reveal magnetic-field anomalies that give away wired electronics, hidden microphones, magnets, and metal. Includes a live oscilloscope graph, one-tap baseline calibration, and peak tracking so you can compare readings as you move. Wi-Fi network scanner: maps every device connected to your local network and flags the ones that behave like a hidden camera or an unknown watcher, so you can spot gear that does not belong. Bluetooth and tracker finder: scans for nearby Bluetooth devices and highlights possible trackers such as AirTag, Find My, and Tile tags. A proximity hunt mode uses live signal strength to help you walk right up to a hidden tag. Hidden camera finder: scan a room with the lens and infrared finder to catch the tell-tale reflection or IR glint of a concealed camera lens, even in the dark. Sweep all: runs the magnetic, Wi-Fi, and Bluetooth detectors together and reports a single combined threat level for a fast room check. Radar and signal meter: every scan is plotted on an animated radar with a clear signal gauge, backed by adjustable sound and haptic feedback you can tune in settings. Scan history: your previous sweeps and their results are saved on device so you can review them any time. RF Signal Detector is a privacy assistance tool. It runs entirely on your device and does not collect or share your personal data. Detection depends on your iPhone hardware and the surrounding environment, so results are indicative and cannot guarantee that every hidden device will be found. Privacy Policy - https://msrtech.net/apps/rf-signal-detector/privacy.html Terms - https://msrtech.net/apps/rf-signal-detector/terms.html EULA - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sentry by RF Code4 screens
RF Signal Detector, Anti Spy4 screens

Verdict

The call

The clearest difference is update cadence: RF Signal Detector, Anti Spy at every 6 weeks against Sentry by RF Code's every 7 months. Sentry by RF Code's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sentry by RF Code ships an update every 7 months, RF Signal Detector, Anti Spy every 6 weeks. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 6 level
Sentry by RF Code versus RF Signal Detector, Anti Spy: the parameters behind the verdict, then further details
ParameterSentry by RF CodeRF Signal Detector, Anti Spy
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size11 MB60 MB
Age rating4+4+
DeveloperRF Code, Inc.MSR TECH LLP

In-app purchases

None

Sentry by RF Code

No in-app purchases

None

RF Signal Detector, Anti Spy

No in-app purchases

Questions

Is Sentry by RF Code free?
Sentry by RF Code is free to download, with no in-app purchases.
Is RF Signal Detector, Anti Spy free?
RF Signal Detector, Anti Spy is free to download, with no in-app purchases.
Do Sentry by RF Code or RF Signal Detector, Anti Spy have ads?
Neither Sentry by RF Code nor RF Signal Detector, Anti Spy shows ads.
Which is updated more often, Sentry by RF Code or RF Signal Detector, Anti Spy?
Sentry by RF Code ships an update every 7 months, and RF Signal Detector, Anti Spy every 6 weeks. Most recently, Sentry by RF Code was updated on September 15, 2026 and RF Signal Detector, Anti Spy on September 18, 2026.

Other comparisons