Best Troubleshooter Apps

249+ iOS apps curated and reviewed

4.1 avg rating

20 free apps

Updated October 2026

Every iPhone needs a few good troubleshooter apps. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Troubleshooter Apps (October 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Danfoss Troubleshooter	Free	3.7★ (3)	No	No	Oct 2026
2	Dezide Troubleshooter	Free	—	No	No	Oct 2026
3	Electrical Troubleshooting MS	Free	4.8★ (122)	No	No	Oct 2026
4	Electrician's Troubleshooter	Free	5.0★ (5)	No	Yes	Oct 2026
5	Solve it now!	Free	—	No	Yes	May 2026
6	Troubleshooting Guides Fortin	Free	1.0★ (5)	No	No	Oct 2026
7	Diesel Engine Troubleshooter	Free	—	No	Yes	Sep 2026
8	GC Troubleshooting Guide	Free	—	No	No	May 2026

Top Picks for Troubleshooter

#1

Danfoss Troubleshooter by Danfoss A/S

Troubleshoot HVACR systems

Editor's Choice

3.7(3 ratings)

Free

Danfoss Troubleshooter screenshot 1

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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.

#2

Dezide Troubleshooter by Dezide ApS

Strong Contender

0.0(0 ratings)

Free

Dezide Troubleshooter screenshot 1

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#3

Electrical Troubleshooting MS by David White

Are you a good troubleshooter?

Worth Considering

4.8(122 ratings)

Free

Electrical Troubleshooting MS screenshot 1

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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.

More Troubleshooter apps to explore

Electrician's Troubleshooter

Electrician's Troubleshooter

Electrician's Troubleshooter

Electrical Reference & Guides

This app provides residential electricians with diagnostic guides, field calculators, and job tracking tools. It offers AI-powered job summaries and references based on current NEC codes to streamline service calls.

Step-by-step diagnostic guidesField calculators (Voltage Drop, Wire Size, Ohm's Law)Job tracking and history

Professional Problem Solving

📊 Productivity

Troubleshooting Guides Fortin

Troubleshooting Guides Fortin

Troubleshooting Guides Fortin

by Fortin Auto Radio Inc

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.

Step-by-step installation guidanceVehicle-specific troubleshootingRemote car starter support

Diesel Engine Troubleshooter

Diesel Engine Troubleshooter

Diesel Engine Troubleshooter

What the symptom means

GC Troubleshooting Guide

GC Troubleshooting Guide

GC Troubleshooting Guide

by GL Sciences Inc.

Hydraulic Troubleshooting

Hydraulic Troubleshooting

Hydraulic Troubleshooting

by Brendan Casey

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.

Guided troubleshooting processProcess flow diagramsText-based guidance

Acson Troubleshooting

Acson Troubleshooting

Acson Troubleshooting

by Acson Malaysia Sales & Service Sdn. Bhd.

📊 Productivity

OT First Aid: Troubleshooting

OT First Aid: Troubleshooting

OT First Aid: Troubleshooting

Fast Help for Industrial OT

📊 Productivity

Troubleshoot Ltd bd

Troubleshoot Ltd bd

Troubleshoot Ltd bd

Hire Trusted IT Experts

Connect with verified IT professionals for immediate technical assistance. Find experts for device troubleshooting, software setup, and network solutions. Book services securely and communicate directly with providers.

Connect with verified IT professionalsInstant booking and secure paymentsSoftware and hardware support

CNC Troubleshooting

CNC Troubleshooting

CNC Troubleshooting

CNC Alarms & Flowcharts

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.

Step-by-step troubleshooting flowchartsAlarm and symptom-based approachesYES/NO question guidance

Electrical Troubleshooter

Electrical Troubleshooter

Electrical Troubleshooter

Voltmeter learning tool - Game

Learn electrical troubleshooting skills using a virtual voltmeter. Solve circuit problems with the fewest tries and shortest time to earn a "5 Star Troubleshooter" certification.

Voltmeter simulation for electrical troubleshootingTen circuits per gameCircuit types: Open, Short, No Problem

by TERENCE DALE N BAYLON

ASK4 Diagnostics

ASK4 Diagnostics

ASK4 Diagnostics

Network tests to help support.

This utility app performs various network tests and diagnostics. It's designed to help support agents quickly identify and resolve internet connectivity issues. Share the collected data with a support representative to expedite problem-solving.

Runs network testsPerforms diagnosticsShares test results

AV & AVL Troubleshooting

by Wish Geeks Techserve Private Limited

Regulator Support

Regulator Support

Regulator Support

by Emerson Process Management

by Edward Lufadeju

FAQ about Troubleshooter

What are the best troubleshooter apps for iPhone?

Danfoss Troubleshooter tops our troubleshooter apps ranking as of October 2026, with a 3.7-star average from 3 App Store ratings, and it's free to download.

Are there free troubleshooter apps for iPhone?

Yes — 20 of the top troubleshooter apps we rank are free to download, including Danfoss Troubleshooter and Dezide Troubleshooter.

Does Danfoss Troubleshooter have ads or in-app purchases?

Danfoss Troubleshooter has no ads and has no in-app purchases, according to its App Store listing as of October 2026.

How many troubleshooter apps are on the App Store?

We track 249+ troubleshooter apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.