OBD2 Code vs Dictionary of Automotive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OBD2 Code
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.
- Diagnostic Trouble Code reference
- Vehicle fault code lookup
- Problem diagnosis aid
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Standard Diagnostic Trouble Codes reference book. A Diagnostic Trouble Code is set in a vehice's onboard computer when a fault occurs in any monitored system. The code number corresponds to the type of fault, and can be used to diagnose the problem.
Dictionary of Automotive
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.
- 300,000+ translations
- French-English / English-French
- Offline access
- Covers automotive engineering, mechanics, electronics, and more
- Subscription for database updates
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Dictionary of Automotive Technology French-English/English-French by Thierry GOURSAU This application contains more than 300,000 translations. Easy to use, efficient and complete, it contains terms and expressions covering the following fields and subfields : Automotive engineering - Tooling - Testing - Maintenance / Repair - Car body - Framework - Aerodynamics - Mechanics - Painting - Engine - Transmission - Suspension - Tyres - Components - Surface treatment - Pneumatics - Brake systems - Metallurgy - Acoustics - Machining - Sheet metal work - Pollution - Radio - Electronics - Electricity - Instruments and Controls - Machines and robots - Tuning - Security - Comfort - etc. An up-to-date dictionary that constitutes a sure and accurate reference and a very helpful and valuable material for engineers, technicians, translators and students who are involved with "Motor industry" and will appreciate it. The wide variety of automotive technical terms presented makes this dictionary unique in the field. The dictionary is available at any time without connecting to the Internet. The application offers a subscription access for €0.99/month to enjoy updates to the translation database. Feel free to consult our Terms and Conditions (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/) and our Privacy Policy (https://www.goursau.com/en/privacy-policy-dictionary-mobile-application).
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Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | OBD2 Code | Dictionary of Automotive |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 39.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 47 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 6.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 2 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Liang-Hung Publishing | Jérôme Goursau |
Customer experience
OBD2 Code
Dictionary of Automotive
In-app purchases
OBD2 Code
No in-app purchases
Dictionary of Automotive
- Subscription3 Days trial$1.991 Month
- Subscription 1 year1 Month trial$11.991 Year
- Application purchase$22.99
