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.
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.
- 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
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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
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | OBD2 Scanner | OBD Auto Doctor | CodigosDTC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (6.2K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 30.4% of reviews | — |
| Number of ratings | 6.2K — better | 2 |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 19 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Creosys | FIXCAR LLC |
Customer experience
OBD2 Scanner | OBD Auto Doctor
CodigosDTC
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
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- Integrate with vehicle maintenance scheduling
CodigosDTC
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OBD2 Scanner | OBD Auto Doctor
- Monthly (legacy)$4.991 Month
- Personal, monthly$4.991 Month
- Premium, monthly$5.991 Month
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- 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
- OBD Auto Doctor Pro (legacy)$29.99
CodigosDTC
- Premium Mensual$9.991 Month
- Premium Anual$89.991 Year
Questions
Is OBD2 Scanner | OBD Auto Doctor free?
Is CodigosDTC free?
Which has better reviews, OBD2 Scanner | OBD Auto Doctor or CodigosDTC?
Do OBD2 Scanner | OBD Auto Doctor or CodigosDTC have ads?
Which is updated more often, OBD2 Scanner | OBD Auto Doctor or CodigosDTC?
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