# Booster vs DiagonalOBDII

The clearest difference is in-app purchases: Booster at none against DiagonalOBDII's 4. Booster also leads on iOS requirement (12.0 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. Booster asks for nothing beyond the download.

## The numbers

| Metric | Booster | DiagonalOBDII |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 89 MB | 24 MB |
| Requires iOS | **12.0** | 18.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Suthipoj tripuwabhrut](https://appshunter.io/developer/1445632800) | [Kyle Louderback](https://appshunter.io/developer/1400068218) |

## What reviewers say

### Booster

[App page](https://appshunter.io/ios/app/booster-alphatech/id6742473812)

**Features:** macOS Compatibility

**In-app purchases:** none


### DiagonalOBDII

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

This app helps mechanics streamline vehicle drive cycles by providing live tracking of emissions monitors and diagnostic trouble codes. It offers precise guidance on drive cycle parameters and instant explanations for trouble codes, ensuring accurate diagnostics and faster vehicle readiness for inspection.

**Highlights:** Live drive cycle monitoring, Immediate DTC identification, Real-time monitor completion verification, Precise drive cycle parameter guidance, Professional, easy-to-navigate dashboard, Instant trouble 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 |


## Frequently asked questions

### Is Booster free?

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

### Is DiagonalOBDII free?

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

### Do Booster or DiagonalOBDII have ads?

Neither Booster nor DiagonalOBDII 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.*