# OpticsOS vs J1939FaultCode

The clearest difference is ads: OpticsOS at none against J1939FaultCode's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. OpticsOS sells 1 in-app purchase, starting at $5.99 per 7 days and J1939FaultCode sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | OpticsOS | J1939FaultCode |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Fortnightly |
| Size | 2 MB | 14 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NICHOLAS ERWIN HEITKAMP](https://appshunter.io/developer/1867627286) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### OpticsOS

[App page](https://appshunter.io/ios/app/opticsos/id6759535367)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Optics Pro Override | $5.99 | per 7 days |


### 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 OpticsOS free?

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

### Is J1939FaultCode free?

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

### Do OpticsOS or J1939FaultCode have ads?

J1939FaultCode shows ads; OpticsOS does not.

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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.*