# Yotta Installer vs J1939FaultCode

The clearest difference is in-app purchases: Yotta Installer at none against J1939FaultCode's 1. Yotta Installer also leads on ads (none vs shown). J1939FaultCode's advantage is update cadence (fortnightly vs every 38 months). On price, device support and iOS requirement there is nothing between them.

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

Yotta Installer ships an update every 38 months, J1939FaultCode fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Yotta Installer | J1939FaultCode |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Fortnightly** |
| Size | 24 MB | 14 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BIA Controls Inc.](https://appshunter.io/developer/1628888803) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### Yotta Installer

[App page](https://appshunter.io/ios/app/yotta-installer/id1628888801)

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

**In-app purchases:** none


### J1939FaultCode

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

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Yotta Installer free?

Yotta Installer is free to download, with no in-app purchases.

### Is J1939FaultCode free?

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

### Do Yotta Installer or J1939FaultCode have ads?

J1939FaultCode shows ads; Yotta Installer does not.

### Which is updated more often, Yotta Installer or J1939FaultCode?

Yotta Installer ships an update every 38 months, and J1939FaultCode fortnightly. Most recently, Yotta Installer was updated on October 25, 2026 and J1939FaultCode on October 28, 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.*