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.



208+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our diagnostic direct list covers 208+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.



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 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.



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.


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 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 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 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.


This visual reference tool aids medical professionals in improving patient engagement and diagnostic accuracy. It utilizes AI and a vast image atlas to help build custom differentials, share patient-specific images, and access comprehensive diagnostic information. Earn continuing education credits while making better medical decisions.


Transform your phone into a powerful car diagnostic tool with this app. It offers comprehensive system scans, full OBDII functionality, and specialized maintenance services for a wide range of vehicle brands. Easily identify issues, access repair data, and generate detailed reports wirelessly.


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.


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 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.


Connect securely with your personal doctor, specialists, therapist, or veterinarian via text, call, or video chat. Get health advice, lab results, prescriptions, and referrals conveniently from your phone. Collaborate with multiple providers and share HealthKit records for seamless care.


This comprehensive manual provides essential information on laboratory and diagnostic tests, focusing on nursing implications and clinical judgment. It helps healthcare professionals understand test procedures, interpret results, and deliver quality patient care with updated terminology and a student-friendly design.


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.


This diagnostic software package provides advanced functionality for Asian vehicles. It requires the MaxiAP200 main program to operate, offering detailed vehicle diagnostics.


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.


This app transforms your device into a powerful car diagnostic tool. It allows you to monitor real-time sensor data, read and interpret diagnostic trouble codes (DTCs), and access detailed information about your vehicle's systems. Compatible with most cars manufactured after 1996.


Access a modern primary care clinic with board-certified providers for same-day or next-day appointments. Establish ongoing relationships for general health, mental health, preventive care, and urgent issues. Video appointments are available in many states.


Access a 24/7 symptom checker to understand potential health concerns. Answer simple questions and receive a personalized assessment report with possible causes and next steps. This app connects to a CE-marked medical device for smart health insights.