Best Diagnostics Engine Apps

Steer: OBD2 Car Scanner

AI Mechanic & OBD Diagnostics

Free

Transform your smartphone into a powerful OBD2 diagnostic tool. Read and clear fault codes, monitor real-time performance metrics, and test your vehicle's acceleration and emissions. Compatible with a wide range of car brands and OBD2 scanners.

MotorData OBD ELM car scanner

Car diagnostic. Dashboard.

Free

Transform your smartphone into a comprehensive car diagnostic tool. Read and clear trouble codes, monitor real-time vehicle performance, and customize your dashboard for a deeper understanding of your car's health. Includes free engine diagnostics with optional advanced features for specific brands.

Kawasaki Diagnostic Tool

Kawasaki Engine Diagnostics

Free

This tool connects to Kawasaki EFI engines via a wireless interface to diagnose issues. It requires a specific hardware purchase to function.

inCarDoc OBD2 ELM327 Scanner

Car diagnostic, check engine

Free

This app acts as a car diagnostic tool, allowing users to scan fault codes, monitor real-time engine parameters, and log vehicle maintenance. It helps optimize car performance and control fuel consumption by accessing ECU data.

Car Scanner ELM OBD2 - Torque

Fixd & Check Engine Diagnostic

Free

Transform your iPhone into a powerful car diagnostic tool. Read and clear trouble codes, monitor live vehicle sensor data, and understand check engine light warnings. Works with most vehicles manufactured since 1996 using standard OBD2 adapters.

OBD2 Scanner | OBD Auto Doctor

Car Diagnostics & Check Engine

Free

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

Banks Power - Control Center

iDash, PedalMonster, Derringer

Free

Control your vehicle's performance with this app. Monitor real-time engine data with the iDash Pro and enhance throttle response with PedalMonster. Customize acceleration and safety features for a better driving experience.

OBD Fusion

OBD2 scan tool & diagnostics

$9.99

This app connects to your car's OBD2 port via a compatible adapter to read vehicle data. Monitor fuel economy, clear check engine lights, and create custom dashboards for real-time diagnostics and performance tracking.

OTR Diagnostics

Heavy-duty scan tool made easy

Free

This app helps heavy-duty truck owners diagnose and resolve common issues like fault codes, regen problems, and derates. It provides plain-language explanations of error codes, allows for bi-directional commands to fix issues, and monitors live truck data to prevent downtime.

OBD2 Car Scanner - EOBD Facile

Torque & ELM327 OBD Diagnostic

Free

Transform your smartphone into a professional car diagnostic tool. Read and clear engine fault codes, monitor real-time sensor data, and perform advanced diagnostics without a mechanic. Supports a wide range of OBD2 compliant vehicles.

SoundTach

RPM from Engine Sound

Free

Measure engine RPM from sound without any tools. Simply point your phone at the exhaust of various engines like motorcycles, cars, or lawn mowers to get accurate, real-time readings. The app automatically filters background noise and indicates signal quality for reliable measurements.

EngineScan AI

AI-Powered Engine Diagnosis

Free

Analyze your vehicle's engine health by recording its sound. This AI-powered tool provides a basic diagnosis and can unlock deeper repair insights with an optional premium report. It also helps manage vehicle maintenance and find service locations.