# OBD Quest vs Hongtool

The clearest difference is in-app purchases: Hongtool at none against OBD Quest's 3. Hongtool also leads on ads (none vs shown) and iOS requirement (9.0 vs 14.0.0). OBD Quest's advantage is update cadence (every 3 weeks vs every 11 months). On price and device support there is nothing between them.

Both are free to download. OBD Quest sells 3 in-app purchases, starting at $9.99 per month. Hongtool asks for nothing beyond the download.

OBD Quest ships an update every 3 weeks, Hongtool every 11 months. The most recent releases landed on October 2, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | OBD Quest | Hongtool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obd-quest/id6496854120/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 11 months |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 154 MB |
| Requires iOS | 14.0.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shop Booster Ltd](https://appshunter.io/developer/1741157179) | [海淑 金](https://appshunter.io/developer/1733572260) |

## 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 |


### Hongtool

[App page](https://appshunter.io/ios/app/hongtool/id6497873827)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBD Quest free?

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

### Is Hongtool free?

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

### Do OBD Quest or Hongtool have ads?

OBD Quest shows ads; Hongtool does not.

### Which is updated more often, OBD Quest or Hongtool?

OBD Quest ships an update every 3 weeks, and Hongtool every 11 months. Most recently, OBD Quest was updated on October 2, 2026 and Hongtool on October 18, 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.*