Comparison

Electrical Troubleshooting MS vs Instrument Tech School

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

Instrument Tech School

Read full description

Inside the Instrument Tech School app, you can: Access all of your videos in one easy to use app Receive push notifications with the latest news and updates Access to all of your videos without having to remember your password Save your favorite posts so you can quickly find them later END USER LICENSE AGREEMENT https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Electrical Troubleshooting MS4 screens
Instrument Tech School3 screens

Verdict

The call

The clearest difference is iOS requirement: Electrical Troubleshooting MS at 13.0 against Instrument Tech School's 16.6. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Electrical Troubleshooting MS ships an update weekly, Instrument Tech School fortnightly. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 9 level
Electrical Troubleshooting MS versus Instrument Tech School: the parameters behind the verdict, then further details
ParameterElectrical Troubleshooting MSInstrument Tech School
PriceFreeFree
Rating4.8 (118 ratings) — better—
Positive reviews88.2% of reviews—
Number of ratings118 — better—
Update frequencyWeekly — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.6
Further details — not scored
Size22 MB46 MB
Age rating4+4+
DeveloperDavid WhiteJavier Zuazua

In-app purchases

None

Electrical Troubleshooting MS

No in-app purchases

None

Instrument Tech School

No in-app purchases

Questions

Is Electrical Troubleshooting MS free?
Electrical Troubleshooting MS is free to download, with no in-app purchases.
Is Instrument Tech School free?
Instrument Tech School is free to download, with no in-app purchases.
Do Electrical Troubleshooting MS or Instrument Tech School have ads?
Neither Electrical Troubleshooting MS nor Instrument Tech School shows ads.
Which is updated more often, Electrical Troubleshooting MS or Instrument Tech School?
Electrical Troubleshooting MS ships an update weekly, and Instrument Tech School fortnightly. Most recently, Electrical Troubleshooting MS was updated on October 16, 2026 and Instrument Tech School on October 6, 2026.

Other comparisons