Comparison

Sentry by RF Code vs RF Detector

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 Detector

This tool helps detect hidden electronic devices and cameras by scanning for electromagnetic fields and network connections. It offers real-time visualizers and alerts, all processed offline without requiring an account or sharing your data.

Highlights
  • Smart RF Detector
  • Network Scanner
  • Real-Time Visualizer
  • Haptic & Audio Alerts
  • 100% Offline Processing
  • Zero Account Required
Features
Read full description

Protect your peace of mind with ReFi. A secure, offline tool to find hidden devices and cameras. Are You Truly Alone? Hidden spy cameras, rogue microphones, and trackers are smaller and easier to hide than ever before. Whether you are in a hotel, an Airbnb, or a sensitive meeting, your privacy matters. Meet ReFi, your essential rf signal detector designed to help you scan your surroundings, locate suspicious electronic emissions, and secure your personal space. Why Choose ReFi? Most security apps require intrusive permissions or upload your data. Not us. Our usp is a privacy first rf detector. We believe a tool built to protect you should never track you. 100% Offline Processing: All scans happen entirely on your device. Zero Account Required: No registration, no emails, no tracking. No Data Sharing: We never collect, sell, or share your metrics. Key Features Smart RF Detector: Detect electromagnetic fields emitted by hidden electronic devices, lenses, and spy bugs. Network Scanner: Identify unauthorized devices connected to local Wi-Fi or Bluetooth networks. Real-Time Visualizer: Easy-to-read signal strength charts spike as you get closer to a threat. Haptic & Audio Alerts: Receive instant sound and vibration feedback to help you sweep a room discreetly. Perfect For: Travelers: Sweep vacation rentals and hotel rooms. Professionals: Secure conference rooms before sensitive discussions. Privacy Enthusiasts: Add an extra layer of daily defense against surveillance. Disclaimer: ReFi uses your phone’s built-in magnetometer and wireless sensors to locate potential threats. While highly effective as a first line of defense, standard smartphones cannot detect all dormant or military-grade signals. Download ReFi today—secure your space and keep your personal life private. Terms(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy:https://nulladevs.com/app-privacy-policy/

Screenshots

Sentry by RF Code4 screens
RF Detector4 screens

Verdict

The call

The clearest difference is update cadence: RF Detector at every 4 days against Sentry by RF Code's every 7 months. Sentry by RF Code's advantage is monetization model (free vs free with in-app purchases). On price, rating, ratings volume and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sentry by RF Code against 5.0 for RF Detector. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

UpkeepUpdate frequency

Sentry by RF Code ships an update every 7 months, RF Detector every 4 days. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 7 level
Sentry by RF Code versus RF Detector: the parameters behind the verdict, then further details
ParameterSentry by RF CodeRF Detector
PriceFreeFree
Rating5.0 (3 ratings)5.0 (2 ratings)
Number of ratings3 — better2
Update frequencyEvery 7 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size11 MB67 MB
Age rating4+4+
DeveloperRF Code, Inc.Daniel Dominguez

Customer experience

Sentry by RF Code

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

RF Detector

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sentry by RF Code

No in-app purchases

None

RF Detector

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 Detector free?
RF Detector is free to download, with no in-app purchases.
Which has better reviews, Sentry by RF Code or RF Detector?
Sentry by RF Code and RF Detector are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.
Do Sentry by RF Code or RF Detector have ads?
Neither Sentry by RF Code nor RF Detector shows ads.
Which is updated more often, Sentry by RF Code or RF Detector?
Sentry by RF Code ships an update every 7 months, and RF Detector every 4 days. Most recently, Sentry by RF Code was updated on October 3, 2026 and RF Detector on October 4, 2026.

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