# X Tires vs J1939FaultCode

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

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

X Tires ships an update fortnightly, J1939FaultCode every 4 days. The most recent releases landed on September 19, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | X Tires | J1939FaultCode |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 69 MB | 11 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Symboticware Incorporated](https://appshunter.io/developer/1863381747) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### X Tires

[App page](https://appshunter.io/ios/app/x-tires/id6756876528)

**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 X Tires free?

X Tires is free to download, with no in-app purchases.

### Is J1939FaultCode free?

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

### Do X Tires or J1939FaultCode have ads?

Neither X Tires nor J1939FaultCode shows ads.

### Which is updated more often, X Tires or J1939FaultCode?

X Tires ships an update fortnightly, and J1939FaultCode every 4 days. Most recently, X Tires was updated on September 19, 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.*