# Sentry by RF Code vs RF Signal Detector

The clearest difference is update cadence: RF Signal Detector at every 5 days against Sentry by RF Code's every 7 months. RF Signal Detector also leads on ratings volume (17 vs 3). Sentry by RF Code's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.8). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sentry by RF Code holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: RF Signal Detector has 17 ratings behind it against 3, so its average is the more settled of the two.

Sentry by RF Code ships an update every 7 months, RF Signal Detector every 5 days. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sentry by RF Code | RF Signal Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sentry-by-rf-code/id1645683076/reviews)** | [4.8 (17 ratings)](https://appshunter.io/ios/app/rf-signal-detector-refi/id6789630945/reviews) |
| Number of ratings | 3 | **17** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 68 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RF Code, Inc.](https://appshunter.io/developer/732245715) | [Daniel Dominguez](https://appshunter.io/developer/1713964409) |

## What reviewers say

### Sentry by RF Code

[App page](https://appshunter.io/ios/app/sentry-by-rf-code/id1645683076)

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

**In-app purchases:** none


### RF Signal Detector

[App page](https://appshunter.io/ios/app/rf-signal-detector-refi/id6789630945)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sentry by RF Code free?

Sentry by RF Code is free to download, with no in-app purchases.

### Is RF Signal Detector free?

RF Signal Detector is free to download, with no in-app purchases.

### Which has better reviews, Sentry by RF Code or RF Signal Detector?

Sentry by RF Code is rated higher. Sentry by RF Code averages 5.0 out of 5 from 3 ratings, while RF Signal Detector averages 4.8 from 17 ratings.

### Do Sentry by RF Code or RF Signal Detector have ads?

Neither Sentry by RF Code nor RF Signal Detector shows ads.

### Which is updated more often, Sentry by RF Code or RF Signal Detector?

Sentry by RF Code ships an update every 7 months, and RF Signal Detector every 5 days. Most recently, Sentry by RF Code was updated on October 19, 2026 and RF Signal Detector on October 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*