# Sentry by RF Code vs RF 4DAT

The clearest difference is in-app purchases: Sentry by RF Code at none against RF 4DAT's 1. Sentry by RF Code also leads on iOS requirement (15.0 vs 17.0). RF 4DAT's advantage is update cadence (every 3 months vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. RF 4DAT sells 1 one-off in-app purchase. Sentry by RF Code asks for nothing beyond the download.

Sentry by RF Code ships an update every 7 months, RF 4DAT every 3 months. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sentry by RF Code | RF 4DAT |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 11 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RF Code, Inc.](https://appshunter.io/developer/732245715) | [4DAT LLC](https://appshunter.io/developer/1649051364) |

## 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 4DAT

[App page](https://appshunter.io/ios/app/rf-4dat/id6757926768)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RF 4DAT Pro | $2.99 | one-time |


## Frequently asked questions

### Is Sentry by RF Code free?

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

### Is RF 4DAT free?

RF 4DAT is free to download, with in-app purchases available.

### Do Sentry by RF Code or RF 4DAT have ads?

Neither Sentry by RF Code nor RF 4DAT shows ads.

### Which is updated more often, Sentry by RF Code or RF 4DAT?

Sentry by RF Code ships an update every 7 months, and RF 4DAT every 3 months. Most recently, Sentry by RF Code was updated on September 15, 2026 and RF 4DAT on September 24, 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.*