Comparison

OBD2 Scanner | OBD Auto Doctor vs CodigosDTC

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OBD2 Scanner | OBD Auto Doctor

Transform your iPhone into a car diagnostic tool. Read and clear engine trouble codes, monitor live engine data, and check emissions readiness with a compatible OBD2 dongle.

Highlights
  • Read and clear diagnostic trouble codes (DTCs)
  • Monitor live engine data
  • Check emissions readiness
  • View freeze-frame data
  • Create custom sensor dashboards
  • Works with compatible OBD2 dongles
Read full description

Turn your iPhone into a powerful OBD2 car scanner and diagnose your vehicle yourself. Check why your Check Engine Light is on, read and clear diagnostic trouble codes, monitor live engine data, and check emissions readiness — all from your iPhone or iPad with a compatible OBD2 dongle. CHECK YOUR CHECK ENGINE LIGHT Don't guess what's wrong with your car. OBD Auto Doctor reads diagnostic trouble codes from your vehicle and provides detailed information to help you understand what they mean. • Read diagnostic trouble codes (DTCs) • Clear Check Engine Light codes • View detailed code descriptions • Read freeze-frame data MONITOR YOUR CAR IN REAL TIME See what's happening while your engine is running with live OBD2 data. • Engine RPM and vehicle speed • Coolant temperature • Fuel system and fuel trim data • Throttle position • Intake air and engine load • Oxygen sensor data • And many other vehicle parameters Create your own dashboard and choose exactly which sensors you want to monitor. CHECK EMISSIONS READINESS Preparing for an emissions or vehicle inspection? Check your vehicle's readiness monitors and see whether your car's emissions systems have completed their tests. WORKS WITH OBD2 DONGLES Connect OBD Auto Doctor to your vehicle using a compatible Bluetooth, Wi-Fi or Bluetooth Low Energy (BLE) OBD2 dongle. Compatible dongles include many ELM327-based adapters, OBDLink, Vgate, Linker, Veepeak and other compatible OBD2 interfaces. Please note: An OBD2 dongle is required to connect the app to your vehicle. Dongle compatibility and available features depend on your vehicle. MORE THAN JUST A CODE READER OBD Auto Doctor gives you access to the information your car's onboard diagnostic system makes available. • Read vehicle information • Monitor fuel consumption • View and record live sensor data • Read diagnostic trouble codes • Clear diagnostic trouble codes • Check emissions readiness • View freeze-frame data • Monitor vehicle performance Whether you're trying to understand a Check Engine Light, preparing your car for inspection, monitoring your engine, or simply want to know more about your vehicle, OBD Auto Doctor puts professional-style OBD2 diagnostics in your pocket. Download OBD Auto Doctor and start diagnosing your car today. SUBSCRIPTION OBD Auto Doctor offers optional subscriptions that unlock additional features. Terms of Use: https://www.obdautodoctor.com/terms

About

CodigosDTC

Understand your vehicle's diagnostic trouble codes with clear explanations, potential causes, symptoms, and AI-powered solutions. This app helps drivers, students, and mechanics interpret fault codes and make informed decisions before visiting a mechanic.

Highlights
  • Search and understand OBD2 fault codes
  • Clear explanations of potential problems
  • Consult causes, symptoms, and solutions
  • AI-powered automotive support chat
  • Save vehicle and diagnostic information
  • Organized fault information
Features
Read full description

CódigosDTC te ayuda a entender mejor las fallas de tu vehículo de forma clara, rápida y práctica. Consulta códigos de diagnóstico OBD2, revisa posibles causas, síntomas y soluciones, y recibe orientación automotriz con inteligencia artificial para saber qué puede estar ocurriendo antes de ir al taller. La app está pensada para conductores, estudiantes, técnicos y mecánicos que necesitan interpretar códigos de falla, revisar información útil del vehículo y tomar mejores decisiones durante un diagnóstico. Con CódigosDTC puedes: • Buscar y entender códigos de falla OBD2. • Recibir explicaciones claras sobre posibles problemas. • Consultar causas, síntomas y soluciones recomendadas. • Usar un chat de soporte automotriz con IA. • Guardar vehículos y diagnósticos. • Acceder a información organizada para revisar fallas con más confianza. Ya sea que quieras entender por qué se encendió el Check Engine, preparar una revisión, comparar posibles causas o tener una guía rápida durante el diagnóstico, CódigosDTC te ofrece una experiencia sencilla y enfocada en ayudarte a comprender mejor tu auto. Términos de uso: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

OBD2 Scanner | OBD Auto Doctor4 screens
CodigosDTC4 screens

Verdict

The call

The clearest difference is rating: CodigosDTC at 5.0 against OBD2 Scanner | OBD Auto Doctor's 4.4. CodigosDTC also leads on update cadence (every 2 days vs every 3 weeks). OBD2 Scanner | OBD Auto Doctor's advantage is ratings volume (6.2K vs 2). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OBD2 Scanner | OBD Auto Doctor sells 9 in-app purchases, starting at $4.99 per month and CodigosDTC sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

CodigosDTC holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: OBD2 Scanner | OBD Auto Doctor has 6.2K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, CodigosDTC every 2 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
OBD2 Scanner | OBD Auto Doctor versus CodigosDTC: the parameters behind the verdict, then further details
ParameterOBD2 Scanner | OBD Auto DoctorCodigosDTC
PriceFreeFree
Rating4.4 (6.2K ratings)5.0 (2 ratings) — better
Positive reviews30.4% of reviews—
Number of ratings6.2K — better2
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size19 MB49 MB
Age rating4+4+
DeveloperCreosysFIXCAR LLC

Customer experience

OBD2 Scanner | OBD Auto Doctor

All ratings6,230 ratings
Positive84.4%
Neutral4.1%
Negative11.4%
Written reviews578 reviews
Positive30.4%
Neutral8.3%
Negative61.2%

CodigosDTC

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

OBD2 Scanner | OBD Auto Doctor

Reported bugs

4 issues
  • App crashes on launch
  • Fails to detect existing fault codes
  • Subscription issues and inability to cancel
  • Incompatible with certain OBD2 adapters

Requested features

6 requests
  • Add support for more vehicle makes and models
  • Improve Bluetooth/WiFi connectivity
  • Provide more detailed diagnostic information
  • Allow clearing of error codes without subscription
  • Add live data dashboards and graphs
Show 1 more
  • Integrate with vehicle maintenance scheduling

CodigosDTC

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

OBD2 Scanner | OBD Auto Doctor

Subscriptions8
  • Monthly (legacy)$4.991 Month
  • Personal, monthly$4.991 Month
  • Premium, monthly$5.991 Month
Show 5 more
  • Professional, monthly$6.991 Month
  • Yearly (legacy)$23.991 Year
  • Personal, yearly$23.991 Year
  • Professional, yearly$29.991 Year
  • Premium, annual3 Days trial$29.991 Year
One-time1
  • OBD Auto Doctor Pro (legacy)$29.99
2 purchases

CodigosDTC

Subscriptions2
  • Premium Mensual$9.991 Month
  • Premium Anual$89.991 Year

Questions

Is OBD2 Scanner | OBD Auto Doctor free?
OBD2 Scanner | OBD Auto Doctor is free to download, with in-app purchases available.
Is CodigosDTC free?
CodigosDTC is free to download, with in-app purchases available.
Which has better reviews, OBD2 Scanner | OBD Auto Doctor or CodigosDTC?
CodigosDTC is rated higher. OBD2 Scanner | OBD Auto Doctor averages 4.4 out of 5 from 6.2K ratings, while CodigosDTC averages 5.0 from 2 ratings.
Do OBD2 Scanner | OBD Auto Doctor or CodigosDTC have ads?
Neither OBD2 Scanner | OBD Auto Doctor nor CodigosDTC shows ads.
Which is updated more often, OBD2 Scanner | OBD Auto Doctor or CodigosDTC?
OBD2 Scanner | OBD Auto Doctor ships an update every 3 weeks, and CodigosDTC every 2 days. Most recently, OBD2 Scanner | OBD Auto Doctor was updated on November 9, 2026 and CodigosDTC on October 31, 2026.

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