Real-time vehicle diagnostics and monitoring for VAG Group cars.

Real-Time Engine Data at Your Fingertips

Watch your car's vital signs update live as you drive. justOBD streams data directly from your vehicle's ECU, giving you a dashboard that shows what's really happening under the hood.

• RPM (tachometer)
• Speed (km/h)
• Engine Load (%)
• Coolant Temperature
• Fuel Level
• Throttle Position
• Cylinder misfire detection

Scan Every Module. Find Every Fault.

justOBD scans up to 30+ VAG vehicle modules — engine, transmission, ABS, airbags, HVAC, electronics, and more. It reads diagnostic trouble codes (DTCs) with extended data including fault priority, frequency, healing status, odometer reading at time of fault, and date.

• Scans 30+ ECU modules (engine, transmission, ABS, airbags, HVAC, steering, convenience, electronics, and more)
• Reads active, confirmed, pending, intermittent, and history fault codes
• Shows extended fault details: priority, frequency, heal conditions, odometer at fault, date
• Human-readable fault descriptions (e.g., "Cylinder 1 Misfire Detected" instead of just P0301)

Stay Ahead of Maintenance

Track your oil changes and service intervals right in the app. justOBD reads your VIN and odometer directly from the car's ECU and lets you log and monitor maintenance schedules so you never miss a service.

• VIN reading directly from vehicle ECU
• Odometer reading from ECU (VAG Mode 22)
• Oil change interval tracking (90-day default)
• Service interval tracking (180-day default)
• Manual reset counters after each service
• All sensor overview: voltage, fuel level, RPM, speed, oil temp, coolant temp

Made for Your Volkswagen, Audi, SEAT, Skoda & More

justOBD is purpose-built for VAG Group vehicles. It speaks the same diagnostic language as your car's factory tools, supporting VAG-specific protocols and module addresses that generic OBD apps can't reach.

• Volkswagen, Audi, SEAT, Skoda
• Porsche, Bentley, Lamborghini, Bugatti
• VAG-specific protocols and module addresses
• Factory-level diagnostic depth

Plug In. Pair. Go.

Connect in seconds with any compatible ELM327 adapter. justOBD automatically detects compatible devices — just plug the adapter into your car's OBD-II port, open the app, and tap to connect.

• iCar Pro 2S (Bluetooth 5.3) — Recommended, best performance
• iCar Pro 1S (Bluetooth 4.0+) — Compatible
• Vgate vLinker MC+ (Bluetooth 4.0) — Compatible
• Generic ELM327 BLE adapters (Bluetooth 4.0+) — Compatible

Your Language, Your Car

justOBD supports multiple languages including English and Ukrainian, with automatic detection of your device language. More languages coming soon.

Try Before You Buy an Adapter

Not sure if justOBD is right for you? Try Demo Mode to explore the full app experience with simulated vehicle data — no adapter or car connection needed.