# OBD2 Trouble Code vs Car Scanner OBD2 ELM

The clearest difference is review sentiment: Car Scanner OBD2 ELM at 92% against OBD2 Trouble Code's 37%. Car Scanner OBD2 ELM also leads on rating (4.7 vs 3.3). OBD2 Trouble Code's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Car Scanner OBD2 ELM sells 4 in-app purchases, starting at $2.99 per 7 days. OBD2 Trouble Code asks for nothing beyond the download.

Car Scanner OBD2 ELM holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: OBD2 Trouble Code has 308 ratings behind it against 39, so its average is the more settled of the two. Written reviews point the same way: 37% of OBD2 Trouble Code's written reviews are positive against 92% of Car Scanner OBD2 ELM's.

## The numbers

| Metric | OBD2 Trouble Code | Car Scanner OBD2 ELM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (308 ratings)](https://appshunter.io/ios/app/obd2-trouble-code/id1315353058/reviews) | **[4.7 (39 ratings)](https://appshunter.io/ios/app/car-scanner-obd2-elm-obd-mary/id1456542840/reviews)** |
| Number of ratings | **308** | 39 |
| Positive reviews | 37.0% of reviews | **92.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 21 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hassan Benessafi](https://appshunter.io/developer/1463795701) | [Ihar Katkavets](https://appshunter.io/developer/1439778280) |

## What reviewers say

### OBD2 Trouble Code

[App page](https://appshunter.io/ios/app/obd2-trouble-code/id1315353058)

Instantly look up your car's check engine codes on the go. Access a vast database of OBD2 codes with descriptions and potential causes for all major manufacturers. Save your search history for quick reference.

**Highlights:** OBD2 code lookup, Check engine code descriptions, Possible cause identification, All major manufacturers supported, Search history, Save results

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

**In-app purchases:** none

**What reviewers like**

- 📚 Comprehensive OBD code database
- 👍 Easy to navigate interface
- 💡 Helpful for understanding car diagnostic codes
- ⚡ Useful for mechanical troubleshooting

**What reviewers complain about**

- 😤 Forced review requirement before app usage
- 📺 Excessive ads throughout the app
- 🔋 High battery consumption
- 🚫 App won't function without review completion
- ⚠️ Misleading review-gating mechanism

**Reported bugs**

- App crashes or won't open without review
- Ads prevent normal app usage
- More info button doesn't expand for some codes
- Incompatibility with certain vehicle models
- Mislabeled codes (P0450-P0459)

**Requested features**

- More detailed code explanations
- Offline functionality
- Better navigation for new users
- Support for codes without letter prefixes
- Expanded information sections for specific codes


### Car Scanner OBD2 ELM

[App page](https://appshunter.io/ios/app/car-scanner-obd2-elm-obd-mary/id1456542840)

This app functions as a universal vehicle scanner using the OBD2 standard. It connects to your car via WiFi or Bluetooth 4.0 LE adapters to diagnose and scan electronic control modules. Users need a compatible ELM327 adapter to utilize its diagnostic capabilities.

**Highlights:** Universal OBD2 scanning, Works with WiFi adapters, Works with Bluetooth 4.0 LE adapters, Diagnose electronic control modules (ECUs), Quick start guide for ELM327 adapters

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Monthly | $7.99 | per month |
| Premium Yearly | $29.99 | per year |
| Full Edition | $9.99 | one-time |


## Frequently asked questions

### Is OBD2 Trouble Code free?

OBD2 Trouble Code is free to download, with no in-app purchases.

### Is Car Scanner OBD2 ELM free?

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

### Which has better reviews, OBD2 Trouble Code or Car Scanner OBD2 ELM?

Car Scanner OBD2 ELM is rated higher. OBD2 Trouble Code averages 3.3 out of 5 from 308 ratings, while Car Scanner OBD2 ELM averages 4.7 from 39 ratings.

### Do OBD2 Trouble Code or Car Scanner OBD2 ELM have ads?

Car Scanner OBD2 ELM shows ads; OBD2 Trouble Code 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.*