# OBD Quest vs ECUconnect

The clearest difference is in-app purchases: ECUconnect at none against OBD Quest's 3. ECUconnect also leads on ads (none vs shown). OBD Quest's advantage is update cadence (every 3 weeks vs every 5 months) and iOS requirement (14.0.0 vs 18.2). 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. ECUconnect asks for nothing beyond the download.

OBD Quest ships an update every 3 weeks, ECUconnect every 5 months. The most recent releases landed on June 1, 2026 and December 8, 2025 respectively.

## The numbers

| Metric | OBD Quest | ECUconnect |
| --- | --- | --- |
| 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 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 13 MB |
| Requires iOS | **14.0.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shop Booster Ltd](https://appshunter.io/developer/1741157179) | [TPE Europe GmbH](https://appshunter.io/developer/1561470951) |

## 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 |


### ECUconnect

[App page](https://appshunter.io/ios/app/ecuconnect/id6502191237)

**In-app purchases:** none


## Frequently asked questions

### Is OBD Quest free?

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

### Is ECUconnect free?

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

### Do OBD Quest or ECUconnect have ads?

OBD Quest shows ads; ECUconnect does not.

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

OBD Quest ships an update every 3 weeks, and ECUconnect every 5 months. Most recently, OBD Quest was updated on June 1, 2026 and ECUconnect on December 8, 2025.

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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.*