# 小e护驾 vs OBD2 Car Scanner Pro ELM327

The clearest difference is in-app purchases: 小e护驾 at none against OBD2 Car Scanner Pro ELM327's 3. 小e护驾 also leads on iOS requirement (9.0 vs 17.0). On price there is nothing between them.

Both are free to download. OBD2 Car Scanner Pro ELM327 sells 3 in-app purchases, starting at $4.99 per 7 days. 小e护驾 asks for nothing beyond the download.

## The numbers

| Metric | 小e护驾 | OBD2 Car Scanner Pro ELM327 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/obd2-car-scanner-pro-elm327/id6802159481/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 6 days |
| Monetization | — | Freemium |
| Size | 64 MB | 28 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Guangdong Ecarservice Ltd](https://appshunter.io/developer/490592913) | [Emir ARIKAN](https://appshunter.io/developer/1823915467) |

## What reviewers say

### 小e护驾

[App page](https://appshunter.io/ios/app/e/id1586925475)

**In-app purchases:** none


### OBD2 Car Scanner Pro ELM327

[App page](https://appshunter.io/ios/app/obd2-car-scanner-pro-elm327/id6802159481)

Transform your OBD-II adapter into a powerful car diagnostic tool. Monitor live engine data, read and clear diagnostic trouble codes, and gain insights into your vehicle's health. Includes AI analysis for potential causes and performance testing features.

**Highlights:** Connects to OBD-II adapters, Live engine data dashboard, Read and clear diagnostic trouble codes, AI analysis for code causes, Vehicle health reports (PDF), Performance testing (0-60, braking), Garage for vehicle maintenance tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly – Half Price | $19.99 | per year |
| Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is 小e护驾 free?

小e护驾 is free to download, with no in-app purchases.

### Is OBD2 Car Scanner Pro ELM327 free?

OBD2 Car Scanner Pro ELM327 is free to download, with in-app purchases available.

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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.*