176+ iOS apps curated and reviewed
The best troubleshooting apps on iPhone average 4.2★ across 176+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
This app guides users through diagnosing and solving hydraulic equipment problems. It utilizes process flow diagrams, text, and video to ensure accurate and efficient troubleshooting for mechanics and technicians.
Learn to troubleshoot electrical circuits with a virtual voltmeter and PLC logic. This app offers 17 random electrical problems for a challenging learning experience, allowing you to practice identifying issues in motor starters and control circuits.
This app helps HVACR technicians diagnose and resolve system issues. It guides users through common symptoms, identifies potential causes, and recommends solutions. An offline database is available for use in remote locations.
This app helps users troubleshoot CNC machines, PLCs, and robots with FANUC drives. It uses step-by-step flowcharts and YES/NO questions to identify faulty parts, saving on expensive service engineer visits. It supports FANUC and SIEMENS CNC machines, with more knowledge bases to be added.
This free AI-powered medical equipment troubleshooting app helps clinical teams quickly resolve issues. It provides guidance to empower users and improve efficiency in healthcare settings.
This utility app helps users troubleshoot common issues with specific medical packaging devices. It provides step-by-step instructions, images, and video links for quick solutions. Users can also access contact information for further technical support.
This app offers quick solutions for common printing issues across various printing methods. It helps users identify symptoms, pinpoint causes, and find resolutions for troubleshooting complex printing problems.
This application provides comprehensive guidance for diagnosing and resolving issues with High-Performance Liquid Chromatography (HPLC) systems. It offers quick tips, solutions for common problems across various detection methods, and helpful tools like a method transfer calculator.
This technical support app guides installers through remote car starter, bypass module, and alarm system installations. Select your vehicle and products to access step-by-step menus that clarify installation issues and provide solutions.
Manage all your smart home devices and access live tech support for any brand. Get help with setup, troubleshooting, and protection for your connected technology. Offers in-store or in-home services for a seamless experience.
This platform allows users and HVAC technicians to explore products, configure A/C systems, and manage product registrations. It provides access to manuals, error codes, and direct support for troubleshooting and repairs.
This app acts as your personal tech assistant, ensuring your device stays secure and performs optimally. It safeguards your data, provides easy access to protection plan details, and offers live support for troubleshooting and setup. Manage your device with self-help tools, tips, and secure backup options.
This app acts as your personal tech expert for your mobile device, offering troubleshooting guides, device location, and data backup. It also provides access to your coverage information, allows direct communication with tech support, and helps protect your identity online.
Manage your internet service account with ease. View and pay bills, track orders, schedule appointments, and upgrade your service speed. Get instant support through live chat and access troubleshooting guides.
Prepare for your HVAC technician certification exam with a comprehensive mobile study tool. It offers a scientific study system, over 1,700 practice questions with detailed explanations, and simulated exams designed by experts. Track your progress and boost confidence for your first attempt.
Prepare for your EPA 608 HVAC certification exam with a comprehensive mobile study tool. Access over 1,200 practice questions, detailed study content, and versatile testing modes to build confidence and pass on your first attempt.