# OBD Quest vs ScanMaster Lite

The clearest difference is rating: OBD Quest at 5.0 against ScanMaster Lite's 3.7. OBD Quest also leads on update cadence (every 3 weeks vs every 5 months) and device support (3 vs 1). ScanMaster Lite's advantage is ads (none vs shown) and ratings volume (6 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. OBD Quest sells 3 in-app purchases, starting at $9.99 per month and ScanMaster Lite sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

OBD Quest holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: ScanMaster Lite has 6 ratings behind it against 1, so its average is the more settled of the two.

OBD Quest ships an update every 3 weeks, ScanMaster Lite every 5 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | OBD Quest | ScanMaster Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obd-quest/id6496854120/reviews)** | [3.7 (6 ratings)](https://appshunter.io/ios/app/scanmaster-lite-elm327-obd-2/id6740844775/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 54 MB | 7 MB |
| Requires iOS | **14.0.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shop Booster Ltd](https://appshunter.io/developer/1741157179) | [SMART Technologies GmBH](https://appshunter.io/developer/1320748539) |

## What reviewers say

### OBD Quest

[App page](https://appshunter.io/ios/app/obd-quest/id6496854120)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Plan | $9.99 | per month |
| Yearly Pro Plan | $99.99 | per year |
| Pro Plan for 3 days only | $0.99 | one-time |


### ScanMaster Lite

[App page](https://appshunter.io/ios/app/scanmaster-lite-elm327-obd-2/id6740844775)

Monitor your car's real-time data, diagnose issues, and enhance performance with this OBD2 scanner app. Connect via Bluetooth to an OBD2 device or ELM 327 adapter to read fault codes and gain insights into engine health and fuel efficiency.

**Highlights:** Real-time vehicle monitoring, Read and clear OBD-II fault codes, Car performance metrics, Wide vehicle compatibility, User-friendly interface, Connects with ELM327 adapters

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Monthly | $6.99 | per month |
| Premium Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is OBD Quest free?

OBD Quest is free to download, with in-app purchases available.

### Is ScanMaster Lite free?

ScanMaster Lite is free to download, with in-app purchases available.

### Which has better reviews, OBD Quest or ScanMaster Lite?

OBD Quest is rated higher. OBD Quest averages 5.0 out of 5 from 1 ratings, while ScanMaster Lite averages 3.7 from 6 ratings.

### Do OBD Quest or ScanMaster Lite have ads?

OBD Quest shows ads; ScanMaster Lite does not.

### Which is updated more often, OBD Quest or ScanMaster Lite?

OBD Quest ships an update every 3 weeks, and ScanMaster Lite every 5 months. Most recently, OBD Quest was updated on November 4, 2026 and ScanMaster Lite on November 4, 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.*