Carly — OBD2 car scanner

Carly — OBD2 car scanner

Diagnose, Code and Service

9.9K ratings
598 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 7, 2011
  • September 17, 2026

Features

Carly — OBD2 car scanner screenshot #1 for iPhone
Carly — OBD2 car scanner screenshot #2 for iPhone
Carly — OBD2 car scanner screenshot #3 for iPhone
Carly — OBD2 car scanner screenshot #4 for iPhone
Carly — OBD2 car scanner screenshot #5 for iPhone
Carly — OBD2 car scanner screenshot #6 for iPhone
Carly — OBD2 car scanner screenshot #7 for iPhone
Carly — OBD2 car scanner screenshot #8 for iPhone
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About

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.

✓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
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What users say about Carly

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What's New in Carly

41.26.091615

September 17, 2026

- All Carly brands in ONE app - New app dashboard design & easier access to features, please check it out! - Improved diagnostics for VW, Audi, Seat and Skoda models between 2015 and 2022 - Extended repair & maintenance guides for all available vehicles in Carly starting 2007

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18

Subscriptions & In-App Purchases

VW/Audi/Seat/Skoda + Mechanic

All Functions + Smart Mechanic for VAG cars

$89.991 Year
How to cancel Carly subscription ⁉️

User reviews

Unclear pricing

Used to be £18.99 py for Porsche 997, surprised to see my account debited by £64.67!! Customer service seriously unhelpful, don’t want to know when I asked for a refund. Since they introduced the general-use scanner the fault codes for Porsche are useless, just general codes that are misleading during diagnosis. Avoid for Porsches
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Poor design, horrible customer service

The app works “ok” at best. Recently required about 15 tries to run simple diagnostics, and product flow is absolute trash. Very poorly designed. Couldn’t even give me a clean code on an obvious misfire. To add to the frustration they customer service is appalling. No clear path to cancel. No clear idea of how much you are paying. Shocking lack of transparency. Fortunately many alternatives in today’s day and age. Frustrating as I have been a Carly user for 4 years but it’s just gotten so bad I can’t in good conscience remain anymore.
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Completely defective

Update: they never offered a refund. They tried to force me through a bureaucratic process. Lost over a hundred dollars on an app that doesn’t even function

I used the app for the first time in a while and they say they have “improved Toyota diagnostics” so I need to reselect my vehicle. Of course the variant of my vehicle which was previously present is now gone, and when I connect and run diagnostics the app tells me my car ignition is off when it’s clearly running.

And of course, because they know most people only need the app infrequently they force you to pay for an entire year up front. REFUND!
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Slimy

This app is okay to use but doesn’t actually clear codes just shows you what codes are on. Also the subscription is very slimy! They require you to cancel your subscription a month before your subscription ends and they will refuse to refund the money! Would highly recommend not getting this app or the subscription
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Consumer hostile

Terrible company. Happy to take your money and add you to a subscription without you knowing. Increase it 20% just because they feel like it. Have to email them to cancel: sign up is easy but cancelling is as hard as they can make it.

Edit: because the developer claims this doesn’t happen, here is the exact text of the email:

“To continue providing you with the best possible experience, we will be adjusting the annual price of your subscription by 20%. This change will take effect with your next direct debit. The price adjustment is necessary due to rising production and licensing costs, as well as increasing expenses for technical infrastructure and the distribution of our service.”

They are LIARS.
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Developer apps

User experience

🐞

Reported Bugs

3 issues

App crashes or freezes

Bug

Adapter not working as expected

Bug

Inaccurate or misleading diagnostic information

Bug
✨

Requested Features

4 requests

More vehicle support

Feature

Improved user interface

Feature

Offline functionality

Feature

Easier subscription management

Feature

FAQ

What does the Carly app do?

The Carly app, when used with the Carly Universal Scanner, allows you to diagnose your car's issues by reading and clearing fault codes from various electronic control units (ECUs). It also provides live engine data, guides for car repair and maintenance, and the ability to code hidden features.

What are the key features of the Carly app?

Key features include comprehensive diagnostics, monitoring of engine live data, step-by-step repair guides, maintenance functions like service resets, battery health checks, coding hidden features, and mileage manipulation detection. Basic features like OBD diagnostics and emission checks are available for free.

How much does the Carly app cost?

The app offers basic features for free, including OBD diagnostics, live data, and emission checks. Advanced features require a yearly subscription, which can be purchased for an individual car brand or all car brands. The Carly Universal Scanner is a separate hardware purchase.

What cars are compatible with Carly?

The app and scanner work with Audi, BMW, Ford, Lexus, Mercedes, Mini, Opel, Porsche, Renault, Seat, Skoda, Toyota, VW, and almost all other car brands with an OBD2 port. However, the specific features available can vary depending on the car model, build year, hardware, and software.

How can Carly help me save money on car repairs?

Carly can help you save money by enabling you to diagnose problems yourself, understand the severity of issues, and perform many maintenance tasks independently, reducing the need for workshop visits. The repair guides also empower you to fix issues yourself.