Carista OBD2 vs Defunc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Carista OBD2
This app acts as a DIY car mechanic, allowing you to customize features, diagnose warning lights, monitor live data, and perform maintenance. Save time and money by handling common car tasks yourself.
- Customize car behavior and unlock hidden features
- Diagnose and reset dashboard warning lights
- Monitor real-time vehicle parameters
- Perform simple DIY car maintenance procedures
- Access advanced electronic diagnostics
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Carista lets you diagnose warning lights, read and reset fault codes, monitor live vehicle data, customize your car, and perform DIY service procedures - all from your phone. Save hours and thousands of dollars in unnecessary workshop visits, and take control of your car's maintenance, diagnostics, and personalization. Trusted by 3+ million users worldwide, Carista supports 30+ car brands, offers SFD & SFD2 compatibility, and brings 10+ years of leadership in the OBD2 industry. CUSTOMIZE YOUR CAR (PRO) Unlock hidden features and personalize how your car behaves. • Gauge needle sweep at startup • Start screen logo • Virtual instrument cluster themes • Daytime running lights • Coming-home and leaving-home lights • Throttle response behavior And many more ADVANCED DIAGNOSTICS (PRO) Go beyond the Check Engine Light. Diagnose multiple electronic control modules, including ABS, airbag, SRS, Engine, Transmission, and manufacturer-specific systems. Read and clear diagnostic trouble codes before visiting a workshop. SEE YOUR CAR'S LIVE DATA (PRO) Monitor real-time vehicle parameters and see what's happening inside your car. Depending on your vehicle, live data can include: • Engine and turbo information • Launch control count • Mileage information • Airbag crash count • Service interval information • Engine RPM and other performance parameters With supported vehicles, Apple CarPlay lets you view basic OBD2 live data on your car's screen while driving. PERFORM DIY SERVICE PROCEDURES (PRO) Handle simple maintenance yourself and avoid workshop visits. Depending on your vehicle, Carista offers: • Electronic parking brake (EPB) service • Service due indicator reset • Tire pressure sensor (TPMS) registration • Diesel particulate filter (DPF) regeneration • Battery registration And other vehicle-specific service functions SUPPORTED CAR BRANDS Carista supports Acura, Audi, BMW, Buick, Cadillac, Chevrolet, Cupra, Dacia, Ford, Genesis, GMC, Holden, Honda, Hyundai, Infiniti, Jaguar, Kia, Land Rover, Lexus, Lincoln, MAN, Mazda, Mini, Nissan, Opel/Vauxhall, Pontiac, Renault, Saab, Scion, SEAT, Skoda, Toyota, Volkswagen and Volvo. Feature availability varies by vehicle, model year and hardware: https://carista.com/apps/supported-cars BASIC OBD2 FEATURES FOR MOST 2005/2008+ CARS (FREE) Compatible vehicles with an OBD port also get basic OBD2 diagnostics, live data, and emissions readiness tools. EASY TO USE: Locate the OBD2 port • Plug in the scanner • Turn on ignition • Open the app • Pair it with the scanner HARDWARE For the best experience, pair the app with the Carista EVO Scanner. Carista also works with selected compatible OBD2 scanners, including OBDLink CX, OBDLink MX Bluetooth, OBDLink LX, Kiwi3, and genuine Bluetooth ELM327 v1.4 scanners. The Carista OBD Scanner (white) is not compatible with Ford vehicles or SFD/SFD2-protected 2020+ Volkswagen Group vehicles. Check compatibility before purchasing a scanner. WHY CARISTA? • 3M+ users worldwide — Trusted by millions of drivers to understand, maintain, and personalize their cars. • 10+ years of automotive expertise — Over a decade of experience in vehicle diagnostics and customization. • Official Volkswagen Group partner — Trusted automotive technology with advanced capabilities for supported VW Group vehicles. • 300+ customizations — Hundreds of ways to personalize your car and unlock hidden features. • SFD & SFD2 support — Unlock supported SFD- and SFD2-protected features and customizations on compatible Volkswagen Group vehicles. • 30+ car brands supported — One app for a wide range of popular manufacturers. • One subscription. All Pro features. — Access every Pro feature for your vehicle without buying individual credits. • Regularly updated — New vehicles and features added frequently. Learn more: https://carista.com/ Supported vehicles: https://carista.com/apps/supported-cars Privacy Policy: https://carista.com/policies/privacy-policy
Defunc
Personalize your audio experience with custom sound settings and EQ presets. Access user manuals, shop for new products, and locate lost earbuds directly within the app.
- Personalized sound profiles
- EQ presets by genre
- In-app user manuals
- Product shopping links
- Earbud location tracking
- Customizable sound settings
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This all-new Defunc true wireless app places effortless and smooth sound control and personalization for your earbuds in the palm of your hand. Personalize settings, shop and get questions answered. With your personal user account, you can create a completely personalized sound experience for your Defunc product. You can of course switch between preset sounds per genre and your completely personalized settings for those of you who have high quality requirements for your favorite music. FAQ We have of course collected all frequently asked questions and answers for a smooth user experience without hassle. You’ll always be able to get your questions answered on the go for a listening experience without interruptions. SHOP As a Defunc user, you will always have the opportunity to buy other Defunc products at attractive prices through shop-links for products relevant for your love of music and other streaming experiences. YOUR SOUND – YOUR WAY For customizing your sound settings in the app, simply go to settings and tap EQ settings, and use preset settings for pop, rock or whichever genre you love. If you are a true sound fan, tap customize settings instead for a completely personalized listening experience instead. MANUAL No need to look for the manual in your original packaging – you´ll always find the newest and updated user manuals directly in the app. LOST & FOUND Lost your earbuds? Not to worry – you’ll be able to see where they are by seing their location in the app.
Screenshots
Verdict
The clearest difference is rating: Carista OBD2 at 4.6 against Defunc's 1.0. Carista OBD2 also leads on review sentiment (34% vs 0%) and ratings volume (4.2K vs 1). Defunc's advantage is in-app purchases (none vs 14) and ads (none vs shown). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Carista OBD2 sells 6 in-app purchases, starting at $19.99 per month. Defunc asks for nothing beyond the download.
Carista OBD2 holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Carista OBD2 has 4.2K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 34% of Carista OBD2's written reviews are positive against 0% of Defunc's.
Carista OBD2 ships an update every 3 weeks, Defunc every 5 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.
| Parameter | Carista OBD2 | Defunc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (4.2K ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 34.2% of reviews — better | 0.0% of reviews |
| Number of ratings | 4.2K — better | 1 |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #164 — better | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 142 MB | 41 MB |
| Age rating | 17+ | 4+ |
| Developer | Prizmos | The Art of Utility AB |
Customer experience
Carista OBD2
Defunc
Bugs and requests
Carista OBD2
Reported bugs
5 issues- App crashes and freezes
- Subscription issues and billing problems
- Incompatibility with certain OBD2 adapters
- Customization features not working as expected
- Inaccurate fault code detection
Requested features
5 requests- Support for more vehicle makes and models
- Offline diagnostics and customization
- Ability to save customization settings
- More detailed error code information
- Improved user interface and navigation
Defunc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Carista OBD2
- Basic$19.991 Month
- Pro$19.991 Month
- 1 month Pro4 variants$19.991 Month
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- 3 month Pro2 variants$29.993 Months
- Pro5 variants$59.991 Year
- One-Time Diagnostic & Reset$9.99
Defunc
No in-app purchases









