# Carly vs xHP Flashtool

The clearest difference is review sentiment: xHP Flashtool at 94% against Carly's 30%. xHP Flashtool also leads on in-app purchases (none vs 12) and rating (4.9 vs 4.6). Carly's advantage is ratings volume (9.9K vs 2.7K). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Carly sells 12 in-app purchases, starting at $11.99 per year. xHP Flashtool asks for nothing beyond the download.

xHP Flashtool holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 9.9K and 2.7K respectively. Written reviews point the same way: 30% of Carly's written reviews are positive against 94% of xHP Flashtool's.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Carly | xHP Flashtool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9.9K ratings)](https://appshunter.io/ios/app/carly-obd2-car-scanner/id467344155/reviews) | **[4.9 (2.7K ratings)](https://appshunter.io/ios/app/xhp-flashtool/id1475112461/reviews)** |
| Number of ratings | **9.9K** | 2.7K |
| Positive reviews | 29.7% of reviews | **94.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 416 MB | 275 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carly Solutions GmbH Co KG](https://appshunter.io/developer/408379680) | [xAutomotive GmbH](https://appshunter.io/developer/1471996796) |

## What reviewers say

### Carly

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

This app allows car owners to diagnose issues, monitor live engine data, and perform maintenance tasks. It offers advanced features like coding hidden car functions and detecting mileage manipulation, helping users save on repairs and understand their vehicle's health.

**Highlights:** Read and clear fault codes from all ECUs, Monitor engine live data parameters, Step-by-step car repair guides, Perform car maintenance and reset service intervals, Check starter battery condition, Code and unlock hidden car features, Detect mileage manipulation

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smart Mechanic | $11.99 | per year |
| 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 |
| VW/Audi/Seat/Skoda + Mechanic | $89.99 | 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


### xHP Flashtool

[App page](https://appshunter.io/ios/app/xhp-flashtool/id1475112461)

This app offers a complete tuning solution for ZF automatic and DCT transmissions. It allows users to customize their transmission's behavior, from smooth and comfortable to race-ready performance, directly from their Apple devices. Unlock the full potential of your vehicle's transmission.

**Highlights:** ZF transmission tuning, Customizable shift behavior, OTS map selection, DCT transmission support, iOS/iPadOS/Mac M1 compatibility, Multiple adapter options

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Improved performance and responsiveness
- 👍 Easy to use and customize
- 🔧 Excellent customer support
- 💥 Significant driving experience enhancement
- 🏎️ Faster and more responsive shifts

**What reviewers complain about**

- 🐛 Occasional connection issues
- 🔍 Compatibility concerns with newer vehicles
- 💰 Perceived high cost of license

**Reported bugs**

- App crashes during reflash process
- Inability to sign out of account with wrong email

**Requested features**

- Expand compatibility to more vehicle models
- Offer more affordable licensing options
- Implement demo/trial mode for potential users


## Frequently asked questions

### Is Carly free?

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

### Is xHP Flashtool free?

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

### Which has better reviews, Carly or xHP Flashtool?

xHP Flashtool is rated higher. Carly averages 4.6 out of 5 from 9.9K ratings, while xHP Flashtool averages 4.9 from 2.7K ratings.

### Do Carly or xHP Flashtool have ads?

Neither Carly nor xHP Flashtool shows ads.

### Which is updated more often, Carly or xHP Flashtool?

Carly ships an update weekly, and xHP Flashtool weekly. Most recently, Carly was updated on September 24, 2026 and xHP Flashtool on September 23, 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.*