Comparison

Electrical Troubleshooting MS vs Electronic Devices Quiz

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Electrical Troubleshooting MS

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.

Highlights
  • 17 random electrical problems
  • Virtual voltmeter with probes
  • Animated motor starter
  • Switch between schematic and PLC logic
  • Troubleshooting Assistant
  • Normal and troubleshooting modes
Features
Read full description

Totally FREE! No ads or pop-ups! How this App Works: This app has 17 different electrical problems that are randomly selected to provide a fun and challenging learning experience. It is certain to help you become more proficient in troubleshooting with a voltmeter. The motor starter is animated so that you can SEE the different contact configurations between forward and reverse. Another unique feature of this app is the ability to instantly switch back and forth between the control schematic and the real time PLC logic. There is also a "Troubleshooting Assistant" to help test the control circuit and find the problems. The app is initially in normal mode. This allows you to experience: - How a reversing starter works. - How to use the virtual voltmeter probes to measure voltages at various test points (small black squares, which turn red when the voltmeter makes contact with them) in the control circuit. - Analyze the PLC logic, when the starter is in various control modes Run (FWD & Rev), Off and Auto (FWD & REV). The HMI only has control in Auto. The selector switches work as indicated by control circuit. After the you understand how the motor starter works in the various control modes, you can check your troubleshooting skills by going to "Settings" (touch the 'More' button (at the top of the app) and then the gear icon) and selecting troubleshooting mode. Touch the "Arrow Back" icon to return to the control schematic. You will notice that the screen background has turned a light green, indicating that it is in troubleshooting mode and has a problem that needs to be found. Use the "Troubleshooting assistant" at the top, right side of the control schematic to help set the operator switches for testing. Use the voltmeter probes and PLC logic screen to identify the problem. Once you believe that you have identified the problem, touch "Problem Identified" button at the top of the app. A list of possible problems will appear. If you cannot determine the problem, at the bottom of the list, there is an item to provide the answer. If you desire to put the control system back in to normal (Non Troubleshooting Mode - No electrical problems) to learn more about how it is suppose to work, go to the settings section and unselect "Troubleshooting Mode". It is truly a great learning tool for anybody that wants to be able to fully utilize a voltmeter to troubleshoot a control circuit.

About

Electronic Devices Quiz

Features
Read full description

Electronic devices quiz app with free download to install complete electronics app (iOS) to practice 800+ electronics devices quiz based MCQs. "Electronic Devices Quiz" app with trivia questions and answers for engineering college students to download electronic devices MCQs with self-assessment tests. "Electronic Devices Notes" learning app with answers key helps to practice test questions for online virtual classroom exam on iOS smartphones. Complete electronic devices quiz app for online degree programs covers basic and advance engineering school course with trivia quizzes. "Electronic Devices Revision" app, a quick study guide for electronics engineering students is an educational tool for beginners' learning and distance education with electronics textbook course as: Chapter 1: Bipolar junction transistors quiz Chapter 2: BJT amplifiers quiz Chapter 3: Diode applications quiz Chapter 4: FET amplifiers quiz Chapter 5: Field effect transistors quiz Chapter 6: Oscillators quiz Chapter 7: Programmable analog arrays quiz Chapter 8: Semiconductor basics quiz Chapter 9: Special purpose diodes quiz Chapter 10: Transistor bias circuits quiz Chapter 11: Types and characteristics of diodes quiz Download "Bipolar Junction Transistors Quiz" app to install revision notes with MCQs: Transistor characteristics and parameters, transistor structure, collector characteristic curve, derating power, maximum transistors rating, transistor as an amplifier, and transistor as switch. Download "BJT Amplifiers Quiz" app to install revision notes with MCQs: Amplifier operation, common base amplifier, common collector amplifier, common emitter amplifier, multistage amplifiers circuit, multistage amplifiers theory, and transistor AC equivalent circuits. Download "FET Amplifiers Quiz" app to install revision notes with MCQs: FET amplification, common drain amplifier, common gate amplifier, and common source amplifier. Download "Field Effect Transistors Quiz" app to install revision notes with MCQs: Introduction to FETs, JFET characteristics, JFET biasing, JFET characteristics and parameters, junction gate field effect transistor, metal oxide semiconductor field effect transistor, MOSFET biasing, MOSFET characteristics, and parameters. Download "Oscillators Quiz" app to install revision notes with MCQs: Oscillators with LC feedback circuits, oscillators with RC feedback circuits, 555 timer as oscillator, feedback oscillator principles, introduction of 555 timer, introduction to oscillators, LC feedback circuits and oscillators, RC feedback circuits and oscillators, and relaxation oscillators. Download "Semiconductor Basics Quiz" app to install revision notes with MCQs: Types of semiconductors, conduction in semiconductors, n-type and p-type semiconductors, atomic structure, calculation of electrons, charge mobility, covalent bond, energy bands, energy gap, Hall Effect, and intrinsic concentration. Download "Special Purpose Diodes Quiz" app to install revision notes with MCQs: Laser diode, optical diodes, pin diode, current regulator diodes, photodiode, step recovery diode, temperature coefficient, tunnel diode, Zener diode applications, Zener diode: basic operation and applications, Zener equivalent circuit, Zener power dissipation, and derating. Download "Transistor Bias Circuits Quiz" app to install revision notes with MCQs: Bias methods, DC operating points, and voltage divider bias. Download "Types and Characteristics of Diodes Quiz" app to install revision notes with MCQs: Biasing a diode, characteristics curves, diode models, introduction to diodes, testing a diode, typical diodes, and voltage characteristics of diode. "Electronic Devices MCQ" app helps to solve electronics multiple choice questions from every chapter, comparing with answer key after every 10 random trivia quiz questions. Looking forward to provide best user experience through electronic devices application!

Screenshots

Electrical Troubleshooting MS4 screens
Electronic Devices Quiz4 screens

Verdict

The call

The clearest difference is in-app purchases: Electrical Troubleshooting MS at none against Electronic Devices Quiz's 7. Electrical Troubleshooting MS also leads on ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Electronic Devices Quiz sells 7 in-app purchases, starting at $4.99 per month. Electrical Troubleshooting MS asks for nothing beyond the download.

UpkeepUpdate frequency

Electrical Troubleshooting MS ships an update weekly, Electronic Devices Quiz every 3 weeks. The most recent releases landed on September 19, 2026 and September 7, 2026 respectively.

Scorecard3 real differences · 7 level
Electrical Troubleshooting MS versus Electronic Devices Quiz: the parameters behind the verdict, then further details
ParameterElectrical Troubleshooting MSElectronic Devices Quiz
PriceFreeFree
Rating4.8 (118 ratings) — better—
Positive reviews88.2% of reviews—
Number of ratings118 — better—
Update frequencyWeekly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size22 MB68 MB
Age rating4+4+
DeveloperDavid WhiteArshad Iqbal

In-app purchases

None

Electrical Troubleshooting MS

No in-app purchases

7 purchases

Electronic Devices Quiz

Subscriptions4
  • 1 Month Package3 Days trial$4.991 Month
  • 3 Months Package7 Days trial$9.993 Months
  • 6 Months Package3 Days trial$14.996 Months
Show 1 more
  • 1 Year Package7 Days trial$19.991 Year
One-time3
  • 1500 Coins$0.99
  • 3500 Coins$1.99
  • 6000 Coins$2.99

Questions

Is Electrical Troubleshooting MS free?
Electrical Troubleshooting MS is free to download, with no in-app purchases.
Is Electronic Devices Quiz free?
Electronic Devices Quiz is free to download, with in-app purchases available.
Do Electrical Troubleshooting MS or Electronic Devices Quiz have ads?
Electronic Devices Quiz shows ads; Electrical Troubleshooting MS does not.
Which is updated more often, Electrical Troubleshooting MS or Electronic Devices Quiz?
Electrical Troubleshooting MS ships an update weekly, and Electronic Devices Quiz every 3 weeks. Most recently, Electrical Troubleshooting MS was updated on September 19, 2026 and Electronic Devices Quiz on September 7, 2026.

Other comparisons