Electrical Troubleshooting MS vs GCAP Cool Works
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 17 random electrical problems
- Virtual voltmeter with probes
- Animated motor starter
- Switch between schematic and PLC logic
- Troubleshooting Assistant
- Normal and troubleshooting modes
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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.
GCAP Cool Works
This app serves as a comprehensive resource for the ammonia industry. It offers tools for testing solenoid coils, performing various industry calculations, and accessing essential information like valve positions, charts, and formulas.
- Solenoid coil testing
- Saturation calculator
- Release calculator
- Superheat-subcooling calculator
- Pressure enthalpy calculator
- Valve position information
- Industry charts and formulas
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GCAP Cool Works is your Ammonia industry resource! The magnetic tool is available for testing and verifying that solenoid coils are working correctly. The app also includes many calculators for saturation, releases, superheat-subcooling, and pressure enthalpy. Valve position information and various charts, formulas, animations, and industry contact information are all available at your fingertips.
Screenshots
Verdict
The clearest difference is review sentiment: Electrical Troubleshooting MS at 88% against GCAP Cool Works's 0%. Electrical Troubleshooting MS also leads on rating (4.8 vs 1.0) and update cadence (weekly vs every 3 months). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Electrical Troubleshooting MS holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Electrical Troubleshooting MS has 118 ratings behind it against 1, 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 0% of GCAP Cool Works's.
Electrical Troubleshooting MS ships an update weekly, GCAP Cool Works every 3 months. The most recent releases landed on September 19, 2026 and June 4, 2026 respectively.
| Parameter | Electrical Troubleshooting MS | GCAP Cool Works |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (118 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 88.2% of reviews — better | 0.0% of reviews |
| Number of ratings | 118 — better | 1 |
| Update frequency | Weekly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 22 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | David White | GCAP, LLC |
Customer experience
Electrical Troubleshooting MS
GCAP Cool Works
In-app purchases
Electrical Troubleshooting MS
No in-app purchases
GCAP Cool Works
No in-app purchases
Questions
Is Electrical Troubleshooting MS free?
Is GCAP Cool Works free?
Which has better reviews, Electrical Troubleshooting MS or GCAP Cool Works?
Do Electrical Troubleshooting MS or GCAP Cool Works have ads?
Which is updated more often, Electrical Troubleshooting MS or GCAP Cool Works?
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