Get your adapterDo you need help?

Understand errors behind the engine light, delete error codes, expose odometer frauds, customize your car and more. 

Carly is the specialist for connected car solutions

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"It is thus also possible for amateurs to use a smartphone to examine the entire electronics of a car."

Here's what Carly users have to say:

"The money I’ve saved from doing diagnostics alone has already made Carly worth every penny. I’d recommend it to any car owner! " 


"The Carly app is easy to use and super useful! I keep the Carly Adapter in my cup holder all the time." 


"Five stars!!! It totally saved my engine!!" 


Carly has connected users with their cars 5 million times all over the world

Premium Customer Support

30-day money-back guarantee for the adapter

Lifetime Warranty

Secure & Legal


Download the Lite version of the Carly App, free of charge, and test. 

Download the Carly App


Every car is different. Check which functions are available for your car model.

Make sure your car is supported

Supported codings for your car modelWhich models are supported

Get started

Turn your smartphone into a powerful yet affordable technical assistant


Order the Universal Carly Adapter

Order your adapter now

Advanced Carly features need a cutting-edge device to support it. Get it with 30 day money-back guarantee.


Pair the app with the adapter

Once your adapter arrives in the mail, connect it to your car and see what's possible with your individual vehicle. 

You like it? Get the Full version!

Scan your Seat & unlock its hidden features

Check the powerful features for your Seat

Keep in mind, all cars are unique. The functions vary by model, year of manufacture and the hardware and software in the car. 

Do you have more questions? Click here

Do you need support? Find answers to your questions here


Read data from your car



Used Car Check

Digital Garage

Individualize functions in your car




Perform maintenance work of your car yourself

Service Reset

El. Parking Brake


What is the difference between the Carly app Lite and Full version?

You can test all features available for your car and perform limited health checks using the free lite version. In addition, you will get one free error report and one free car check report. The full version allows you full and unlimited access to all features available for your car.

Does the price of the adapter include the full version of the app?

No, the adapter purchase does not include the app full version. 

How do I know what features will work for my car?

You can check the available Carly features for your car model. Check for Seat here

To see which functions are supported by your car’s software, first connect the adapter and the free Carly Lite app.

We offer you a 30-day test period for the Carly adapter during which you can test and in addition, you receive one free car diagnosis and one free used car check. You can send the adapter back to us within the given period in the case that you are not satisfied. Please contact us if you want to do so.

Does the 30-day money-back guarantee work for the app as well?

iTunes and Google Play Store purchases can only be cancelled directly in the Google Play Store on your device or through the Apple App store directly. After purchasing the FULL app, the money can not be returned by us.  Due to this regulation, we have offered the free Lite version. The Lite version offers a detailed insight into what Carly has to offer, explains each function and makes sure which functions/codings are possible for your vehicle.


Discover the most powerful solution for your Seat

Know your car’s health & save money

The feature, our customers love most. An indispensable tool for every car owner, especially with older cars out of warranty.

Analyse the car before buying

Mileage manipulation can add up to $4,000 to the price of an average family car and it can also hide serious mechanical problems. 

Negotiate a better deal, detect fraud, see past driving behaviour, or check if there was a crash - everything without a mechanic by your side! 

Perform simple service yourself

Be independent of the workshop, perform simple DIY maintenance and service yourself.

Check and delete error codes, reset service intervals and more!

Code your car to fit your needs

Unlock more safety or comfort possibilities and stop annoying behavior.

It’s easy, safe and fun. All settings get saved in the back-up.

Interested which codings are supported for your car model?

Perform regular health checks


Check a used car

Perform DIY Service

Get the New Generation 

Carly Universal Adapter

Turn your vehicle into a connected car

It may be small in size, but it's powerful in performance. Enables fast and secure connection, works with iOS and Android, and most importantly supports all advanced and newly updated Carly functionalities.

In-depth diagnosis with manufacturer standard gives you access to all control units (i.e. Engine, Transmission, ABS, Airbag, Multimedia) and reads codes which some other tools don’t.

Connect with the Next Gen Adapter

Check your vehicle

In-depth diagnosis with manufacturer standard gives you access to all control units and reads codes which some other tools don’t.

Learn more

Mechanics recommend running diagnostic sessions more than once a year to catch potential problems early, but each session can easily cost you over $60. 

With Carly you can do it as often you like. The most loved feature and an indispensable tool for any car owner, especially with older cars out of warranty. 

Carly not only shows you the fault code but interprets the severity, and visualizes it for you in an easy and understandable way.

Get your adapter

Get the most out of your Seat & start saving money

Enjoy the  

LITE experience 

with the 

FREE app version

US $


/ adapter

one-time purchase, *in Europe

New Gen Universal Adapter 

The LITE app version includes:

Health check (limited)

1 x Error report 

1 x Used car check

with 30-day money-back

 guarantee and a lifetime warranty

Benefit from the ultimate

 FULL experience

The FULL App Version offers:


to all features and updates 

supported by your car

US $


/ month

* US $ 28,99 billed annually

New Gen Universal Adapter 

US $


/ adapter

one-time purchase, **in Europe

with 30-day money-back

 guarantee and a lifetime warranty

Try Carly App for free and explore all the tools and services it enables you to get the most out of your car. 

Start with your adapterStart with your adapterSupported brands