A fault isolation tool for aircraft technicians, offering quick symptom searches and guided troubleshooting. Its dynamic database is updated with field feedback for improved accuracy.



214+ iOS apps curated and reviewed
With an average user rating of 4.1β , the diagnostics direct category is one of the App Store's strongest. Browse all 214+ apps we track, sorted so the most loved ones surface first.



A fault isolation tool for aircraft technicians, offering quick symptom searches and guided troubleshooting. Its dynamic database is updated with field feedback for improved accuracy.






This app translates your car's diagnostic trouble codes into plain language, helping you understand potential issues and their severity. It provides maintenance reminders and offers advanced features like issue forecasting and emissions pre-checks with a premium subscription.






Transform your smartphone into a powerful car diagnostic and customization tool. Easily scan trouble codes, monitor live data, and access advanced features like coding and service functions for a wide range of car brands. Save time and money on car maintenance and personalization.


Transform your phone into a powerful car diagnostic tool. Read and clear trouble codes, monitor real-time engine data, and track fuel economy. Generate detailed reports for easy sharing and analysis.


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.


Access comprehensive OEM automotive repair and diagnostic data on your mobile device. Streamline inspections with photo documentation and generate detailed reports. Identify vehicle issues efficiently with built-in diagnostic tools for faster customer approvals and increased productivity.


Monitor, diagnose, and update your vehicle's software remotely. This powerful tool allows you to view live data, read and clear diagnostic codes, and record data for your technician. Connect directly with your mechanic for remote assistance and software updates, saving you trips to the repair shop.


This app provides professional-level vehicle diagnostics, offering features like reading/clearing fault codes, data flow analysis, and special maintenance functions. It supports a wide range of car brands and allows users to subscribe to specific diagnostic software. Connects via Bluetooth to your smartphone for intelligent vehicle analysis.


This app provides advanced diagnostics for Jeep, Chrysler, and Dodge vehicles. It allows users to read and clear trouble codes, view live sensor data, and access settings across all vehicle modules, including ABS and transmission.


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.


This app offers convenient COVID-19 testing and rapid treatment options for all variants. It also provides quick access to medical experts and effective treatments for common ailments like sniffles, helping users feel better faster.


Decode diagnostic error audio signals from supported Lenovo workstations and ThinkPad P series laptops, even when the system won't boot. Check warranty status, look up codes, and manage all diagnostic events in one place.


This utility app allows you to thoroughly test various components of your mobile device. It offers both automated and interactive tests to ensure everything is functioning correctly. Results can be emailed or shared directly with compatible service centers.


Access critical vehicle repair information directly from your mobile device. Quickly diagnose issues, find confirmed fixes, and view detailed procedures and diagrams to expedite repairs. Save time and improve accuracy with instant access to a vast database of automotive knowledge.




Access in-depth hardware and software diagnostics for your iOS device. Get detailed information on your CPU, screen, battery, network, and sensors. Monitor memory, storage, and screen performance with this comprehensive utility.


Transform your phone into a powerful car diagnostic tool. Read and clear trouble codes, monitor live sensor data, and analyze performance with real-time graphs. Get AI-powered insights and detailed vehicle history reports.


Transform your smartphone into a powerful car diagnostic tool. Monitor real-time engine data, read and clear trouble codes, and track your vehicle's performance. Customize your dashboard and access repair manuals to understand and fix issues.


Diagnose network issues affecting smart home devices and internet speed. This app runs tests and shares diagnostic information with technical support to quickly resolve connectivity problems.


This smart diagnostic system connects to your iPhone or iPad to provide on-demand vehicle diagnostics. It offers comprehensive coverage for a wide range of car makes and includes full system diagnosis with various special functions.