Read and clear check engine codes fast, test battery health, watch live data, and track fuel economy with one OBD2 code reader app.
Check engine light on? Need to pass inspection? Fuel economy getting worse for no obvious reason? GeekOBD helps you diagnose the problem before it turns into guesswork or an expensive repair.
GeekOBD turns your phone into a practical OBD2 code reader and car scanner. Plug in a Bluetooth OBD adapter, connect in seconds, and read fault codes with plain-language explanations so you can understand the problem before paying for repairs.
From check engine diagnostics and live data monitoring to battery testing, smog pre-checks, trip logging, and custom HUD gauges, it covers the core tools most drivers want in a portable scanner app.
Compatible with MOBD hardware and ELM327 adapters. Works with most 1996+ OBD2 / EOBD vehicles.
FAULT CODE DIAGNOSTICS
- Read and clear engine fault codes (DTCs)
- Turn off the check engine light after repairs
- View code meaning, symptoms, likely causes, and recommended fixes
- Track code changes over time with cloud monitoring
SPECIALIZED VEHICLE CHECKS
- Emissions pre-inspection based on GB18285 / GB3847 workflows
- Battery health test for discharge, alternator, and charging system
- Throttle carbon deposit check without disassembly
- Sensor monitoring, readiness status, and vehicle noise analysis
FUEL, TRIP, AND DASHBOARD
- Real-time fuel consumption, average fuel use, and cost tracking
- Fuel map visualization and driving behavior analysis
- Full trip logs with GPS route and sensor data overlay
- Custom HUD and dashboard gauges for speed, RPM, coolant temp, and more
DRIVING ASSISTANCE
- Voice alerts based on custom sensor rules
- Dash cam, navigation, and Find My Car support
- Maintenance, inspection, weather, and fuel price reminders
Years of OBD experience, reliable data, and cloud backup for reports and trip history. Download GeekOBD and keep a diagnostic scanner in your pocket.
Continued use of GPS running in the background can dramatically decrease battery life.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
What's New
- Added support for more languages and regions
- iOS 26 support
- Faster & more stable Bluetooth OBD connection
- Minor bug fixes
Recent Updates
- New: AI-powered diagnostic knowledge base for smarter fault troubleshooting
- New: Safe fault code clearing with before/after data comparison
- New: Vehicle anomaly reference manual & sensor reference guide
- New: Battery health test — quickly assess battery condition without disassembly
- New: Throttle carbon deposit detection — know if cleaning is truly needed
- New: Sensor data cloud monitoring with real-time anomaly alerts
Version 11.4
The developer, 明道通途, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Location
Data Linked to You
The following data may be collected and linked to your identity:
Location
Identifiers
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Size
233.3 MB
Category
Navigation
Compatibility
Requires iOS 14.0 or later.
iPhone Requires iOS 14.0 or later.
iPod touch Requires iOS 14.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
Apple Vision Requires visionOS 1.0 or later.
Location
This app may use your location even when it is not open, which can decrease device battery life.
Languages
English and 12 more
English, Arabic, French, German, Hindi, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
Beijing Mentalroad Sience Technology Co. Ltd. has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
Address China Mainland beijing beijing 18 Building 1, Zhongguancun East Road, Haidian District, 100110
