Car Scanner OBD2 ELM is the household name in obd2 scanner free, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
This app functions as a universal vehicle scanner using the OBD2 standard. It connects to your car via WiFi or Bluetooth 4.0 LE adapters to diagnose and scan electronic control modules. Users need a compatible ELM327 adapter to utilize its diagnostic capabilities.
Turn your smartphone into a professional OBD2 diagnostic tool. Monitor engine torque, read and clear fault codes, and access real-time vehicle sensor data. Supports a wide range of vehicles and ELM327 adapters.
This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.
What We Love
👍 Easy to use
🚀 Excellent diagnostic capabilities
💰 Great value for money
🔍 Detailed fault code information
📚 Helpful repair suggestions
🔌 Convenient Bluetooth connectivity
🔁 Seamless updates
🧠 Useful for DIY repairs
🛠️ Saves money on mechanic fees
🔍 Comprehensive vehicle diagnostics
Room to Improve
🐛 Occasional Bluetooth connectivity issues
⚠️ Limited support for some vehicle makes/models
🚫 Cannot read odometer information
🚫 Lack of advanced features for professional mechanics
🚫 No support for European vehicle VINs
🚫 Inability to read certain fault codes (e.g., airbag)
What are the best obd2 scanner free apps for iPhone?
Car Scanner OBD2 ELM: Obd Mary tops our obd2 scanner free apps ranking as of October 2026, with a 4.7-star average from 39 App Store ratings, and it's free to download.
Does Car Scanner OBD2 ELM: Obd Mary have ads or in-app purchases?
Car Scanner OBD2 ELM: Obd Mary shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
How many obd2 scanner free apps are on the App Store?
We track 249+ obd2 scanner free apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.