# Sentry by RF Code vs RF Signal Detector, Anti Spy

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.

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

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.

## The numbers

| Metric | Sentry by RF Code | RF Signal Detector, Anti Spy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sentry-by-rf-code/id1645683076/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 11 MB | 60 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RF Code, Inc.](https://appshunter.io/developer/732245715) | [MSR TECH LLP](https://appshunter.io/developer/1761560109) |

## 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, Anti Spy

[App page](https://appshunter.io/ios/app/rf-signal-detector-anti-spy/id6785884707)

**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, 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.

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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.*