# UDP Sender vs J1939FaultCode

The clearest difference is in-app purchases: UDP Sender at none against J1939FaultCode's 1. J1939FaultCode's advantage is update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

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

UDP Sender ships an update fortnightly, J1939FaultCode every 4 days. The most recent releases landed on September 21, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | UDP Sender | J1939FaultCode |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 4 MB | 11 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jhonyfer Angarita](https://appshunter.io/developer/1847210034) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### UDP Sender

[App page](https://appshunter.io/ios/app/udp-sender/id6756079510)

**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 UDP Sender free?

UDP Sender is free to download, with no in-app purchases.

### Is J1939FaultCode free?

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

### Do UDP Sender or J1939FaultCode have ads?

Neither UDP Sender nor J1939FaultCode shows ads.

### Which is updated more often, UDP Sender or J1939FaultCode?

UDP Sender ships an update fortnightly, and J1939FaultCode every 4 days. Most recently, UDP Sender was updated on September 21, 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.*