OpenOBD: OBD2 Car Scanner
Check Engine Light Code Reader
Free · Designed for iPad. Not verified for macOS.
Turn your iPhone into a live car dashboard. Connect an ELM327 for real-time engine data, GPS trip logging, and fault-code diagnostics — no account, no subscription.
OpenOBD turns your iPhone into a real-time car dashboard. Connect any ELM327 OBD2 adapter (Bluetooth or Wi-Fi) and see what your car is really doing — live.
LIVE ENGINE DATA
• Speed, RPM, coolant temperature, intake, throttle, engine load, battery voltage and more
• 50+ sensors with gauges you pick and reorder yourself
• Instant and average fuel consumption
• Tap any gauge for a live 60-second chart
CARPLAY
• A live 8-tile dashboard on your car's built-in screen
• Start and stop trip recording without touching your phone
DIAGNOSTICS
• Read and clear fault codes (DTCs) with plain-language explanations
• For common codes: what it means, how urgent it is, what to do next
• Emissions readiness monitors before an inspection
• Freeze frame — the sensor values from the moment the fault occurred
• Vehicle info: VIN, fuel type, supported sensors
TRIP LOGGING
• Automatically record your drives with the GPS route on a map
• Keeps recording in the background, even with the screen locked
• Distance, duration, speed and fuel for every trip
• Export any trip as CSV or GPX
CAR HEALTH TOOLS
• Battery and charging test: state of charge, alternator and cranking check
• Diesel and DPF pre-check from standard, read-only OBD evidence
• Used car check before you buy
• Measure 0-100 km/h acceleration and 100-0 km/h braking
• Live alerts for overheating and low voltage, in plain language
BUILT FOR DRIVERS
• Beautiful dark interface designed for the car
• Over 40 languages, metric and imperial units
• Works with affordable ELM327 adapters — no subscription, no account, no ads
• Your data stays on your phone
TRY IT WITHOUT HARDWARE
• Tap Connect, then Demo Mode, to explore every feature with simulated live data
OpenOBD is not affiliated with any car manufacturer. An OBD2 adapter (sold separately) is required to read data from your vehicle. Most petrol cars built after 2001 and diesels after 2004 are supported. The battery, diesel and used-car results are read-only pre-checks and do not replace a professional inspection.
• Connects to your last adapter automatically when the app opens and when CarPlay starts.
• CarPlay: tap Connect on the car screen to connect without picking up your phone.
• iPad: a denser dashboard with live 60-second charts, and a side tab bar you can drag to either edge or to the bottom.
• iPhone Duo: content stays clear of the camera edge.
The developer, Osman Cengeri, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Location
- Identifiers
- Usage Data
- Diagnostics
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Osman Cengeri
- Size
- 56.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
English and 42 more
- English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Osman Cengeri