Carista is a mobile app which empowers you to seamlessly diagnose, customize, and service your car. Just plug in your OBD2 adapter, launch the app and save time and money on dealers and mechanics.

Is my car supported? Check here:

Find out why your "Check Engine" light is on: Carista shows you a list of the fault codes stored in your vehicle, as well as their meanings. You can also reset the "Check Engine" light.

Dealer-level electronic diagnostics (fault code checking and resetting) of all modules in the vehicle, incl. ABS, airbag, and other manufacturer-specific systems.

Personalization of comfort & convenience features of the car. Customize your car to your liking and get rid of all those annoyances you have to deal with every time you get into your car. You can even enable hidden features that you didn't even know your car had!

Carista shows you if your car is ready for Emission tests -- that way you can avoid the trip to the testing station before the vehicle's systems have gathered enough driving data to be ready for testing.

For some Volkswagen, Audi, SEAT, Skoda models:
• Electronic parking brake (EPB) retraction tool, Service reset, Launch control counter, Detailed ECU information
For some Toyota, Lexus, Scion models:
• Tire pressure sensors (TPMS), ABS/VSC/TRAC inspection, Detailed ECU information


1. Supported vehicles
Advanced features are only supported on certain models by Volkswagen, Audi, SEAT, Skoda (VAG), BMW, Mini, Toyota, Lexus and Scion. See:

2. Pricing:
All paid features (see above) are available with an in-app purchase of our Pro functionality: a 1-week pass for $9.99 USD or an auto-renewable subscription at $39.99 USD/year. If you use the official Carista OBD2 adapter, you will receive a free one-month trial of all paid features by picking the yearly subscription. Here are Apple's rules on auto-renewable subscriptions:
• Payment will be charged to iTunes Account at confirmation of purchase
• Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
• Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

3. Hardware Requirement:
To use Carista, you need an OBD2 adapter. You can use the Carista OBD2 adapter, a Kiwi3 or OBDLink MX+ adapter, or a generic ELM327 v1.4 WiFi adapter (just make sure it’s not fake/defective; note that generic Bluetooth adapters are not allowed by Apple). See:

Info and help at
Terms of use and Privacy policy:

What’s New

Version 3.9.5

Bug fixes & minor updates

Ratings and Reviews

3.8 out of 5
76 Ratings

76 Ratings

MKMark33 ,

History Function

Great little device, but lacks one fundamental function and that’s a history log. The device will only show you fault codes when connected to the device. It would be great to be able to look though the fault list when not connected. To diagnose faults, it’s always good practice to sit down with a cup of tea and a manual to see if there is a correlation with faults stored. For example, if two components show a fault for open circuit, it could suggest a common live feed or Earth is the problem, but you lose the ability to compare fault codes as soon as you disconnect. Can’t be that difficult to add a log!

Clarkey1230 ,

What a bit of kit!!

Bought this along with the official dongle for my Audi A3 8v primarily for when I need to replace rear pads. Have tried the customisation and unlocked some higher end features like visual reverse indication on MMI, Cylinder on demand display when activated, chirp on lock/unlock, dial sweep and lap timer to name but a few. Easily done with simple select and save option. Am now part of beta testing and the guys respond super quick when communicating with them. No need to spend loads on a big old plug in unit, this is versatile simple to use and you have it to hand whenever you fancy messing about a bit. Sure the diagnostic aspect will be just as good but luckily not needed t yet. 5 stars easily... recommend without hesitation

BelgarumV ,

Very capable and excellent vfm

Wanted a few “tweaks” to my new Golf 7.5 and had expensive quotes from several auto-electricians for what seemed to me to be just a few minutes work - all £65+. Tried this app and the Carista OBD dongle and for under £25 all-in (just bought the one week pass) achieved 5 out of 6 of the tweaks I wanted. The teardrop wipe isn’t available. And, it took me less the 30 minutes to do the whole lot. I signed up for the beta program which has a lot more customisation available, but only one of which I was interested in. Keep up the excellent work and I’ll be keeping my eye on an update for the teardrop wipe 😊


Prizmos OOD
52.2 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.


English, French, German, Italian, Japanese, Russian, Spanish

Age Rating
Rated 4+
© 2014-2018 Prizmos OOD
In-App Purchases
  1. Pro £33.99
  2. Pro 1-week Pass £9.99
  3. Pro £33.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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