# Radio Code Master vs Sentinel Guard

The clearest difference is in-app purchases: Sentinel Guard at none against Radio Code Master's 2. Sentinel Guard also leads on iOS requirement (13.0 vs 16.6). Radio Code Master's advantage is device support. On price there is nothing between them.

Both are free to download. Radio Code Master sells 2 one-off in-app purchases. Sentinel Guard asks for nothing beyond the download.

## The numbers

| Metric | Radio Code Master | Sentinel Guard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/radio-code-master-unlock/id1454120777/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 91.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 73 MB | 28 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [APPMEUP](https://appshunter.io/developer/1023725442) | [B-Exper](https://appshunter.io/developer/1243783097) |

## What reviewers say

### Radio Code Master

[App page](https://appshunter.io/ios/app/radio-code-master-unlock/id1454120777)

Instantly recover activation codes for Renault and Ford car stereos after a battery change. Simply find your radio's precode, enter it into the app, and receive your unlock code immediately. Get your music back without paying a dealer.

**Highlights:** Instant radio code recovery, Supports Renault and Ford vehicles, Find precode on radio label, Simple and efficient interface, Immediate unlock code generation, Informative help section

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Instant unlock | $0.99 | one-time |
| Instant unlock | $1.99 | one-time |


### Sentinel Guard

[App page](https://appshunter.io/ios/app/sentinel-guard/id6744034961)

**In-app purchases:** none


## Frequently asked questions

### Is Radio Code Master free?

Radio Code Master is free to download, with in-app purchases available.

### Is Sentinel Guard free?

Sentinel Guard is free to download, with no in-app purchases.

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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.*