OBD Plus vs OBD Quest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OBD Plus
Monitor your vehicle's engine, emissions, and other critical systems. This app aids in diagnosing car issues and provides insights into various components for better car maintenance.
- Vehicle condition monitoring
- Car diagnostics
- Engine system monitoring
- Emission control system analysis
- Oxygen sensor monitoring
- Fuel system analysis
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Our APP can help the user to reach the function including vehicle condition, car and car diagnose, Through the participation of automobile. It not only solves the problems of some owners, but also monitors many systems and components, including engine, catalytic converter, Oxygen sensors, emission control systems, fuel systems, GER and so on. Let your car and life perfect!
OBD Quest
Decode and understand car diagnostic trouble codes with this comprehensive interpreter. It provides detailed insights into fault codes, potential causes, and repair recommendations, complementing your existing OBD2 scanning tools. Access a vast database of codes across multiple languages and car brands to diagnose issues with confidence.
- Interpretation of over 85,000 OBD2 codes
- Multilingual support (English, French, Italian, German, Portuguese, Spanish)
- Extensive coverage across auto makes and brands
- Detailed insights for each code search
- Unlimited code searches
- AI-powered code interpretation
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Unlock the ultimate power of OBD2 code interpretation with OBDQuest, your comprehensive solution for decoding, understanding and diagnosing car issues. Whether you're looking up a specific DTC fault code definition, or utilizing an OBD2 car scanner, OBDQuest will be your work companion you ever needed to provide unmatched insights into each individual fault code. Don’t get confused, this simple yet innovative application exploiting the power of AI along with comprehensive OBDii SAE/ISO databases is complementing your daily scanning tools below: obd2 scanner, torque obd2, bluedriver obd2 scan tool, car scanner, car scanner elm obd2, carista, obd fusion, forscan, obdlink, obd11, obdeleven, bimmerlink, veepeak, dash command, elm obd2, carly obd2 car scanner, JScan, repair solutions 2, torque pro, bootmod3, FIXD OBD2 Scanner, autocodes, DtcFix, DTCs Fix, obd jscan, OBDocker, torque lite, ScanMaster, car scanner, Dr. Prius, Carly, HobDrive etc. If you use any of those tools already, keep on using them along with OBDQuest to get more insights of the fault code and ease your car diagnostics. Key Features: 1. Interpretation of over 85,000 OBD2 codes 2. Multilingual support in English, French, Italian, German, Portuguese, and Spanish 3. Extensive coverage across various auto makes and brands 4. Detailed insights for each code search, covering potential symptoms, likely causes, primary components affected, recommended fixes, estimated repair costs, and risk assessment. 5. Unlimited code searches, empowering you to tackle any issue with confidence. OBDQuest isn't just another OBD2 app; it's your trusted companion for navigating the complexities of car diagnostics. Don't let trouble codes hold you back; harness the power of OBDQuest and drive with confidence. EULA - End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy : https://obdquest.com/privacy-policy/
Screenshots
Verdict
The clearest difference is rating: OBD Quest at 5.0 against OBD Plus's 3.3. OBD Plus's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, update cadence 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. OBD Quest sells 3 in-app purchases, starting at $9.99 per month. OBD Plus asks for nothing beyond the download.
OBD Quest holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
OBD Plus ships an update every 4 weeks, OBD Quest every 3 weeks. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.
| Parameter | OBD Plus | OBD Quest |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 21.9% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 4 weeks | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 14.0.0 |
| Further details — not scored | ||
| Size | 30 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Leagend Optoelectronics Co., Ltd. | Shop Booster Ltd |
Customer experience
OBD Plus
OBD Quest
In-app purchases
OBD Plus
No in-app purchases
OBD Quest
- Monthly Pro Plan$9.991 Month
- Yearly Pro Plan$99.991 Year
- Pro Plan for 3 days only$0.99









