# Roger MDM vs J1939FaultCode

The clearest difference is in-app purchases: Roger MDM at none against J1939FaultCode's 1. Roger MDM also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). J1939FaultCode's advantage is update cadence (every 4 days vs every 5 months). On price and ads there is nothing between them.

Both are free to download. J1939FaultCode sells 1 one-off in-app purchase. Roger MDM asks for nothing beyond the download.

Roger MDM ships an update every 5 months, J1939FaultCode every 4 days. The most recent releases landed on September 11, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Roger MDM | J1939FaultCode |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 days** |
| Size | 11 MB | 11 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Roger Sp. z o.o. sp. k.](https://appshunter.io/developer/1441304551) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### Roger MDM

[App page](https://appshunter.io/ios/app/roger-mdm/id1577890104)

**Features:** macOS Compatibility

**In-app purchases:** none


### J1939FaultCode

[App page](https://appshunter.io/ios/app/j1939faultcode/id6778431735)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| J1939 Pro | $2.99 | one-time |


## Frequently asked questions

### Is Roger MDM free?

Roger MDM is free to download, with no in-app purchases.

### Is J1939FaultCode free?

J1939FaultCode is free to download, with in-app purchases available.

### Do Roger MDM or J1939FaultCode have ads?

Neither Roger MDM nor J1939FaultCode shows ads.

### Which is updated more often, Roger MDM or J1939FaultCode?

Roger MDM ships an update every 5 months, and J1939FaultCode every 4 days. Most recently, Roger MDM was updated on September 11, 2026 and J1939FaultCode on October 1, 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.*