# BlueDriver OBD2 Scan Tool vs Carly

The clearest difference is in-app purchases: BlueDriver OBD2 Scan Tool at none against Carly's 10. BlueDriver OBD2 Scan Tool also leads on review sentiment (58% vs 29%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Carly sells 10 in-app purchases, starting at $21.99 per year. BlueDriver OBD2 Scan Tool asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for BlueDriver OBD2 Scan Tool against 4.6 for Carly. Both are backed by a comparable volume of ratings — 14K and 9.9K respectively. Written reviews are what separate them: 58% of BlueDriver OBD2 Scan Tool's written reviews are positive against 29% of Carly's.

BlueDriver OBD2 Scan Tool ships an update fortnightly, Carly weekly. Both last shipped on November 10, 2026.

## The numbers

| Metric | BlueDriver OBD2 Scan Tool | Carly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (14K ratings)](https://appshunter.io/ios/app/bluedriver-obd2-scan-tool/id445403397/reviews) | **[4.6 (9.9K ratings)](https://appshunter.io/ios/app/carly-obd2-car-scanner/id467344155/reviews)** |
| Number of ratings | **14K** | 9.9K |
| Positive reviews | **58.5% of reviews** | 29.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 273 MB | 417 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lemur Vehicle Monitors](https://appshunter.io/developer/445403400) | [Carly Solutions GmbH Co KG](https://appshunter.io/developer/408379680) |

## What reviewers say

### BlueDriver OBD2 Scan Tool

[App page](https://appshunter.io/ios/app/bluedriver-obd2-scan-tool/id445403397)

This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.

**Highlights:** Read and clear trouble codes (Check Engine, ABS, etc.), Generate professional-grade Repair Reports, Access Mode 6 and smog readiness data, View live data with interactive graphing, Wireless Bluetooth scanning, Likely fixes explained in plain language

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Excellent diagnostic capabilities
- 💰 Great value for money
- 🔍 Detailed fault code information
- 📚 Helpful repair suggestions

**What reviewers complain about**

- 🐛 Occasional Bluetooth connectivity issues
- ⚠️ Limited support for some vehicle makes/models
- 🚫 Cannot read odometer information
- 🚫 Lack of advanced features for professional mechanics
- 🚫 No support for European vehicle VINs

**Reported bugs**

- Occasional app crashes
- Failure to detect vehicle faults in some cases
- Inability to update firmware on certain devices

**Requested features**

- Add support for more vehicle makes and models
- Improve Bluetooth stability and connectivity
- Implement odometer reading functionality
- Expand diagnostic capabilities to include more advanced features
- Add support for European vehicle VINs


### Carly

[App page](https://appshunter.io/ios/app/carly-obd2-car-scanner/id467344155)

This app provides comprehensive car diagnostics, live engine data, and repair guides. It helps users understand their car's health, perform maintenance, and even unlock hidden features. Compatible with a wide range of car brands, it empowers owners to take control of their vehicle's upkeep.

**Highlights:** Read and clear fault codes, Monitor engine live data, Access expert repair guides, Perform car maintenance, Check starter battery condition, Code and unlock hidden features, Detect mileage manipulation

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Toyota | $21.99 | per year |
| Mercedes | $28.99 | per year |
| Smart Mechanic | $35.99 | per year |
| Volkswagen, Audi, Seat, Skoda | $53.99 | per year |
| Carly for BMW Full-Version | $59.99 | per year |
| BMW and Mini | $63.99 | per year |
| All Brands Upgrade | $78.99 | per year |
| All Brands | $82.99 | per year |
| BMW and Mini + Smart Mechanic | $99.99 | per year |
| All Brands + Smart Mechanic | $118.99 | per year |

**What reviewers like**

- 👍 Great customer service
- 🚀 Lots of functionality
- 💡 Useful diagnostic and coding features
- 🔒 Secure and reliable

**What reviewers complain about**

- 💰 Expensive subscription model
- 🐛 Connectivity and compatibility issues
- 🔍 Limited functionality for some vehicles
- 📚 Confusing or lacking documentation

**Reported bugs**

- App crashes or freezes
- Adapter not working as expected
- Inaccurate or misleading diagnostic information

**Requested features**

- More vehicle support
- Improved user interface
- Offline functionality
- Easier subscription management


## Frequently asked questions

### Is BlueDriver OBD2 Scan Tool free?

BlueDriver OBD2 Scan Tool is free to download, with no in-app purchases.

### Is Carly free?

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

### Which has better reviews, BlueDriver OBD2 Scan Tool or Carly?

Carly is rated higher. BlueDriver OBD2 Scan Tool averages 4.6 out of 5 from 14K ratings, while Carly averages 4.6 from 9.9K ratings.

### Do BlueDriver OBD2 Scan Tool or Carly have ads?

Neither BlueDriver OBD2 Scan Tool nor Carly shows ads.

### Which is updated more often, BlueDriver OBD2 Scan Tool or Carly?

BlueDriver OBD2 Scan Tool ships an update fortnightly, and Carly weekly. Most recently, BlueDriver OBD2 Scan Tool was updated on November 10, 2026 and Carly on November 10, 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.*