# DiagonalOBDII vs PaperooX

The clearest difference is in-app purchases: PaperooX at none against DiagonalOBDII's 4. PaperooX also leads on iOS requirement (16.0 vs 18.1). On price, ads and device support there is nothing between them.

Both are free to download. DiagonalOBDII sells 4 in-app purchases, starting at $12.99 per month. PaperooX asks for nothing beyond the download.

## The numbers

| Metric | DiagonalOBDII | PaperooX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diagonalobdii/id6743419784/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 2 MB |
| Requires iOS | 18.1 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kyle Louderback](https://appshunter.io/developer/1400068218) | [Digitmedia e.K.](https://appshunter.io/developer/1826088662) |

## What reviewers say

### DiagonalOBDII

[App page](https://appshunter.io/ios/app/diagonalobdii/id6743419784)

This app helps mechanics perform vehicle drive cycles more efficiently. It provides real-time monitoring of emissions monitors and diagnostic trouble codes (DTCs), offering clear guidance and instant explanations to ensure vehicles pass inspection quickly and accurately.

**Highlights:** Live drive cycle monitoring, Immediate diagnostic trouble code (DTC) identification, Real-time emissions monitor status, Precise drive cycle parameter guidance, Professional, easy-to-navigate dashboard, Instant code explanations

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diagonal Premium Monthly | $12.99 | per month |
| Diagonal Premium Trial | $12.99 | per month |
| Shop Owner - Monthly | $17.99 | per month |
| Diagonal Premium Yearly | $99.99 | per year |


### PaperooX

[App page](https://appshunter.io/ios/app/paperoox/id6749620565)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DiagonalOBDII free?

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

### Is PaperooX free?

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

### Do DiagonalOBDII or PaperooX have ads?

Neither DiagonalOBDII nor PaperooX shows ads.

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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.*