# OBD2 Code vs Dictionary of Automotive

The clearest difference is review sentiment: Dictionary of Automotive at 100% against OBD2 Code's 39%. Dictionary of Automotive also leads on rating (5.0 vs 3.3) and update cadence (every 7 months vs every 47 months). OBD2 Code's advantage is in-app purchases (none vs 3) and ratings volume (3 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Dictionary of Automotive sells 3 in-app purchases, starting at $1.99 per month. OBD2 Code asks for nothing beyond the download.

Dictionary of Automotive holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 39% of OBD2 Code's written reviews are positive against 100% of Dictionary of Automotive's.

OBD2 Code ships an update every 47 months, Dictionary of Automotive every 7 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | OBD2 Code | Dictionary of Automotive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/obd2-code/id492632063/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dictionary-of-automotive/id601769815/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 39.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 7 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 25 MB |
| Requires iOS | **6.0** | 26.1 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Liang-Hung Publishing](https://appshunter.io/developer/340127474) | [Jérôme Goursau](https://appshunter.io/developer/427950097) |

## What reviewers say

### OBD2 Code

[App page](https://appshunter.io/ios/app/obd2-code/id492632063)

This app serves as a reference for standard Diagnostic Trouble Codes (DTCs). It helps users understand fault codes generated by a vehicle's onboard computer, aiding in problem diagnosis.

**Highlights:** Diagnostic Trouble Code reference, Vehicle fault code lookup, Problem diagnosis aid

**Features:** macOS Compatibility

**In-app purchases:** none


### Dictionary of Automotive

[App page](https://appshunter.io/ios/app/dictionary-of-automotive/id601769815)

This comprehensive automotive dictionary provides over 300,000 French-English and English-French translations. It covers a vast range of technical terms for engineers, technicians, translators, and students in the motor industry. Access is available offline for efficient and accurate reference.

**Highlights:** 300,000+ translations, French-English / English-French, Offline access, Covers automotive engineering, mechanics, electronics, and more, Subscription for database updates

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription | $1.99 | per month |
| Subscription 1 year | $11.99 | per year |
| Application purchase | $22.99 | one-time |


## Frequently asked questions

### Is OBD2 Code free?

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

### Is Dictionary of Automotive free?

Dictionary of Automotive is free to download, with in-app purchases available.

### Which has better reviews, OBD2 Code or Dictionary of Automotive?

Dictionary of Automotive is rated higher. OBD2 Code averages 3.3 out of 5 from 3 ratings, while Dictionary of Automotive averages 5.0 from 1 ratings.

### Do OBD2 Code or Dictionary of Automotive have ads?

Neither OBD2 Code nor Dictionary of Automotive shows ads.

### Which is updated more often, OBD2 Code or Dictionary of Automotive?

OBD2 Code ships an update every 47 months, and Dictionary of Automotive every 7 months. Most recently, OBD2 Code was updated on November 1, 2026 and Dictionary of Automotive on November 1, 2026.

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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.*