Comparison

Electrical Troubleshooting MS vs Simurelay

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

Simurelay

Design and simulate electromechanical systems with a wide range of basic electrical components. Create detailed electrical diagrams using relays, switches, buttons, contactors, and timers.

Highlights
  • Design electromechanical systems
  • Simulate electrical diagrams
  • Basic electrical components library
  • Relays, switches, buttons, contactors
  • Timers and motors simulation
Features
Read full description

Simurelay is a simulator to help you design electromechanical systems and simulate them. It allows to make many electrical diagrams by using the available basic components such as relays, switches, buttons, contactors, timers, motors...

Screenshots

Electrical Troubleshooting MS4 screens
Simurelay4 screens

Verdict

The call

The clearest difference is rating: Electrical Troubleshooting MS at 4.8 against Simurelay's 3.9. Electrical Troubleshooting MS also leads on review sentiment (88% vs 52%) and in-app purchases (none vs 3). On price, ads and device support 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. Simurelay sells 3 one-off in-app purchases. Electrical Troubleshooting MS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Electrical Troubleshooting MS holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Electrical Troubleshooting MS has 118 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 88% of Electrical Troubleshooting MS's written reviews are positive against 52% of Simurelay's.

UpkeepUpdate frequency

Electrical Troubleshooting MS ships an update weekly, Simurelay every 7 months. The most recent releases landed on September 19, 2026 and August 1, 2026 respectively.

Scorecard7 real differences · 3 level
Electrical Troubleshooting MS versus Simurelay: the parameters behind the verdict, then further details
ParameterElectrical Troubleshooting MSSimurelay
PriceFreeFree
Rating4.8 (118 ratings) — better3.9 (17 ratings)
Positive reviews88.2% of reviews — better52.3% of reviews
Number of ratings118 — better17
Update frequencyWeekly — betterEvery 7 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.6
Further details — not scored
Size22 MB19 MB
Age rating4+4+
DeveloperDavid WhiteAbdessamed Benkabouya

Customer experience

Electrical Troubleshooting MS

All ratings118 ratings
Positive95.8%
Neutral1.7%
Negative2.5%
Written reviews17 reviews
Positive88.2%
Neutral0.0%
Negative11.8%

Simurelay

All ratings17 ratings
Positive76.5%
Neutral0.0%
Negative23.5%
Written reviews65 reviews
Positive52.3%
Neutral16.9%
Negative30.8%

In-app purchases

None

Electrical Troubleshooting MS

No in-app purchases

3 purchases

Simurelay

One-time3
  • Timers Coils and Contacts$7.99
  • Advanced Tools$7.99
  • Full Version$14.99

Questions

Is Electrical Troubleshooting MS free?
Electrical Troubleshooting MS is free to download, with no in-app purchases.
Is Simurelay free?
Simurelay is free to download, with in-app purchases available.
Which has better reviews, Electrical Troubleshooting MS or Simurelay?
Electrical Troubleshooting MS is rated higher. Electrical Troubleshooting MS averages 4.8 out of 5 from 118 ratings, while Simurelay averages 3.9 from 17 ratings.
Do Electrical Troubleshooting MS or Simurelay have ads?
Neither Electrical Troubleshooting MS nor Simurelay shows ads.
Which is updated more often, Electrical Troubleshooting MS or Simurelay?
Electrical Troubleshooting MS ships an update weekly, and Simurelay every 7 months. Most recently, Electrical Troubleshooting MS was updated on September 19, 2026 and Simurelay on August 1, 2026.

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