# OBD2 Trouble Code vs ChkOBD OBD2 Analyzer

The clearest difference is in-app purchases: OBD2 Trouble Code at none against ChkOBD OBD2 Analyzer's 4. OBD2 Trouble Code also leads on ratings volume (306 vs 4) and rating (3.3 vs 3.0). On price, ads and device support there is nothing between them.

Both are free to download. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month. OBD2 Trouble Code asks for nothing beyond the download.

OBD2 Trouble Code holds the better App Store score, 3.3 against 3.0. That said, the two scores are not equally well evidenced: OBD2 Trouble Code has 306 ratings behind it against 4, so its average is the more settled of the two.

## The numbers

| Metric | OBD2 Trouble Code | ChkOBD OBD2 Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (306 ratings)](https://appshunter.io/ios/app/obd2-trouble-code/id1315353058/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews) |
| Number of ratings | **306** | 4 |
| Positive reviews | 37.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 63 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hassan Benessafi](https://appshunter.io/developer/1463795701) | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) |

## 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


### ChkOBD OBD2 Analyzer

[App page](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011)

Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.

**Highlights:** View engine values, In-app purchase for advanced data, Smog Check Assistant, VIN Analyzer, Error Decoder and Reset, Bluetooth adapter compatibility check

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smog Check Assistant | $4.99 | per month |
| VIN Analyzer | $1.99 | one-time |
| Error Analyzer | $2.99 | one-time |
| Advance Engine Values | $4.99 | one-time |


## Frequently asked questions

### Is OBD2 Trouble Code free?

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

### Is ChkOBD OBD2 Analyzer free?

ChkOBD OBD2 Analyzer is free to download, with in-app purchases available.

### Which has better reviews, OBD2 Trouble Code or ChkOBD OBD2 Analyzer?

OBD2 Trouble Code is rated higher. OBD2 Trouble Code averages 3.3 out of 5 from 306 ratings, while ChkOBD OBD2 Analyzer averages 3.0 from 4 ratings.

### Do OBD2 Trouble Code or ChkOBD OBD2 Analyzer have ads?

Neither OBD2 Trouble Code nor ChkOBD OBD2 Analyzer 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.*