# OBD2 Scanner | OBD Auto Doctor vs OBD2 Expert

The clearest difference is review sentiment: OBD2 Scanner | OBD Auto Doctor at 30% against OBD2 Expert's 8%. OBD2 Scanner | OBD Auto Doctor also leads on rating (4.4 vs 4.1) and ratings volume (6.2K vs 735). OBD2 Expert's advantage is iOS requirement (9.3 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. OBD2 Scanner | OBD Auto Doctor sells 9 in-app purchases, starting at $4.99 per month and OBD2 Expert sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

OBD2 Scanner | OBD Auto Doctor holds the better App Store score, 4.4 against 4.1. That said, the two scores are not equally well evidenced: OBD2 Scanner | OBD Auto Doctor has 6.2K ratings behind it against 735, so its average is the more settled of the two. Written reviews point the same way: 30% of OBD2 Scanner | OBD Auto Doctor's written reviews are positive against 8% of OBD2 Expert's.

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, OBD2 Expert every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OBD2 Scanner | OBD Auto Doctor | OBD2 Expert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (6.2K ratings)](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183/reviews)** | [4.1 (735 ratings)](https://appshunter.io/ios/app/obd2-expert/id1142156521/reviews) |
| Number of ratings | **6.2K** | 735 |
| Positive reviews | **30.3% of reviews** | 8.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 MB | 17 MB |
| Requires iOS | 17.0 | **9.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Creosys](https://appshunter.io/developer/908897186) | [Michael Lauer](https://appshunter.io/developer/300205595) |

## What reviewers say

### OBD2 Scanner | OBD Auto Doctor

[App page](https://appshunter.io/ios/app/obd2-scanner-obd-auto-doctor/id908897183)

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

**Highlights:** Read and clear OBD2 diagnostic trouble codes (DTC), Reset Check Engine Light, Monitor real-time vehicle data and sensor readings, Track fuel consumption, Read readiness monitor status for emissions testing, Initiate service routines, Send diagnostic data via email

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly (legacy) | $4.99 | per month |
| Personal, monthly | $4.99 | per month |
| Premium, monthly | $5.99 | per month |
| Professional, monthly | $6.99 | per month |
| Yearly (legacy) | $23.99 | per year |
| Personal, yearly | $23.99 | per year |
| Professional, yearly | $29.99 | per year |
| Premium, annual | $29.99 | per year |
| OBD Auto Doctor Pro (legacy) | $29.99 | one-time |

**What reviewers like**

- 🚀 Works great
- 👍 Easy to use
- 🚀 Accurate diagnostics
- 🚀 Extensive adapter support
- 👍 Helpful for DIY mechanics

**What reviewers complain about**

- 🔒 Requires subscription for full functionality
- 🐛 Connection issues
- 🐛 Inconsistent performance
- 🐛 Doesn't work with all vehicles
- 💰 Expensive subscription

**Reported bugs**

- App crashes on launch
- Fails to detect existing fault codes
- Subscription issues and inability to cancel
- Incompatible with certain OBD2 adapters

**Requested features**

- Add support for more vehicle makes and models
- Improve Bluetooth/WiFi connectivity
- Provide more detailed diagnostic information
- Allow clearing of error codes without subscription
- Add live data dashboards and graphs


### OBD2 Expert

[App page](https://appshunter.io/ios/app/obd2-expert/id1142156521)

Diagnose and monitor your vehicle's health by connecting an OBD2 adapter. View sensor data, read and reset trouble codes, and analyze diagnostic information. Developers can use it as a hardware simulator or protocol bridge.

**Highlights:** Vehicle diagnostics and monitoring, Read and reset diagnostic trouble codes (DTC), View current sensor data, Analyze Mode 6 diagnostics, Load vehicle status files for testing, Share vehicle status data, BLE/WiFi OBD2 ScanTool simulator for developers, OBD2 protocol communication bridge

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Operation Mode Bridge | $0.99 | one-time |
| Operation Mode ScanTool | $2.99 | one-time |
| Operation Mode Simulator | $4.99 | one-time |
| All Features | $5.99 | one-time |

**What reviewers like**

- 👍 Works well
- 🚀 Fast and responsive
- 💡 Useful features

**What reviewers complain about**

- 🐛 Crashes frequently
- 🔒 Requires payment to unlock core functionality
- ⚠️ Doesn't detect/connect to OBD2 adapter
- 🤖 Lacks instructions/documentation
- 💸 Overpriced for limited functionality

**Reported bugs**

- Freezes during use
- Fails to recognize compatible OBD2 adapters
- Inaccurate vehicle information detection

**Requested features**

- Add support for more vehicle models
- Implement live data monitoring
- Include ability to clear diagnostic codes
- Provide free trial period to test functionality


## Frequently asked questions

### Is OBD2 Scanner | OBD Auto Doctor free?

OBD2 Scanner | OBD Auto Doctor is free to download, with in-app purchases available.

### Is OBD2 Expert free?

OBD2 Expert is free to download, with in-app purchases available.

### Which has better reviews, OBD2 Scanner | OBD Auto Doctor or OBD2 Expert?

OBD2 Scanner | OBD Auto Doctor is rated higher. OBD2 Scanner | OBD Auto Doctor averages 4.4 out of 5 from 6.2K ratings, while OBD2 Expert averages 4.1 from 735 ratings.

### Do OBD2 Scanner | OBD Auto Doctor or OBD2 Expert have ads?

Neither OBD2 Scanner | OBD Auto Doctor nor OBD2 Expert shows ads.

### Which is updated more often, OBD2 Scanner | OBD Auto Doctor or OBD2 Expert?

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, and OBD2 Expert every 2 months. Most recently, OBD2 Scanner | OBD Auto Doctor was updated on October 26, 2026 and OBD2 Expert on October 24, 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.*