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, Cupra, Skoda models:
- Electronic parking brake (EPB) retraction tool, Service reset, Launch control counter, Detailed ECU information
- Diesel Particulate Filter (DPF) regeneration
- Battery registration
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, Cupra, Skoda (VAG), BMW, Mini, Toyota, Lexus, Scion, Nissan and Infiniti. See:

2. Pricing:
All paid features (see above) are available with an in-app purchase of our Pro functionality: an auto-renewable subscription at $49.99 USD/year or $19.99 USD/3 months or $9.99 USD/month. 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, OBDLink MX+ adapter, Kiwi3 adapter, or a generic ELM327 v1.4 WiFi adapter (just make sure it’s not fake/defective). See:

Info and help at

Terms of use and Privacy policy:

What’s New

Version 5.5.1

New in v5.5.1:
- Live data for some new Audi/Skoda/Seat/VW models.
- Bug fixes.

Ratings and Reviews

3.4 out of 5
164 Ratings

164 Ratings

saleen8927 ,

Does what it says, but only minimal usefulness

First, it works perfectly. For customization, though, while there are probably a hundred different options I can customize, most are options I could already customize right from the car’s menus. They also include a lot of useless options that nobody would ever care or want to change. That said, I bought it to fix two issues and it was able to solve one beautifully. I used it to shut off the engine auto-off when stopped at a stoplight. For that alone, it was worth the price of the module (and I accomplished that with the free trial, so no cost for the app). The other issue I was hoping it would fix was the unreasonably loud and long warning dings when I open the car door with the car running. Sadly, turning that off (or even adjusting the volume) isn’t an option. Either way, it was worth the cost for the one problem it solved, so I can’t complain. It may be great for the diagnostic tools, but I have no need for that, so I can’t comment.

Will_074 ,

It’s ok, but doesn’t worth its price!

40 bucks for this is unreal, the app it self is okay. But for the price we should have more options instead windows/lights and door to be reprogrammed.
My Audi A3 could be reprogrammed on how I want to lock and unlock, windows, lights (which was cool) but it doesn’t justifies the price!
It does reads hidden codes (which is cool) but again 40 bucks nahhh
I’d say for 9,99 it’s okay, and they do have this price but for a week lol (see they think that this thing worth like gold). Nice try, I took advantage of the free week that they gave me and could do everything I wanted during this time. Even after finished I said ... okay I’ll buy it cause it was cool, then 40 bucks lol (nope) 9,99 per year and I’ll be here buying and also giving the 5 stars.

rkricketts ,

Too Expensive!

As a (former) retail software developer, I understand why devs are moving toward subscription models. But $40/year is too expensive for what is generally an infrequently-used, casual-use app. None of the other apps I subscribe to, like RoboKiller and Overcast to name just two, cost anywhere near as much and I use them *far more often*. Overcast could quadruple its subscription and I’d still pay it because I use it heavily – hours per week. Its use:cost ratio is very favorable. But Carista, not so much. I’d probably use this a few times per year, that’s all. Very unfavorable use:cost ratio.

Carista, as I understand, already discourages commercial use and “oversharing” by limiting the number of vehicles (by VIN) that can be tweaked. I’m fine with that. I just want to tweak our two cars, that’s all. But I want to revisit my tweaks occasionally.

Offer a $10 or $15(tops) per year sub and I’m pretty sure the developer will see many more annual subs. I would sub for that. $40 is a lot for a seldom-used app. $10 or $15 isn’t. And I will not pay $10 for one week, either. That math is even worse.

App Privacy

The developer, Prizmos, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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