Electrical Troubleshooting MS vs Contractor Success School
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.
Contractor Success School
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Contractor Success School is the all-in-one growth platform built specifically for driven home-service contractors who want more leads, higher profits, and a real path to long-term freedom. Inside the app, you get step-by-step training on Local SEO, Google Business Profile optimization, Meta and Google Ads, speed-to-lead systems, AI follow-up, sales processes, and brand positioning—without the fluff or theory that doesn’t move the needle. This isn’t generic business advice. Every lesson is designed for roofing, HVAC, remodeling, and other home-service companies that want to dominate their local market. You’ll learn how to generate consistent inbound leads, improve close rates, increase profit per job, and build systems that run without you being stuck in the day-to-day. Members get access to weekly live coaching calls, implementation workshops, expert guest trainings, downloadable scripts and templates, ad frameworks, SOPs, and a private contractor community focused on execution and accountability. If you’re tired of chasing leads, guessing with marketing, or relying on agencies that don’t understand contractors, Contractor Success School gives you the tools, strategies, and support to build a predictable, scalable business—on your terms.
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Verdict
The clearest difference is update cadence: Contractor Success School at every 3 days against Electrical Troubleshooting MS's weekly. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Electrical Troubleshooting MS ships an update weekly, Contractor Success School every 3 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Electrical Troubleshooting MS | Contractor Success School |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (122 ratings) — better | — |
| Positive reviews | 88.2% of reviews | — |
| Number of ratings | 122 — better | — |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 22 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | David White | Contractor Success School |
In-app purchases
Electrical Troubleshooting MS
No in-app purchases
Contractor Success School
No in-app purchases
Questions
Is Electrical Troubleshooting MS free?
Is Contractor Success School free?
Do Electrical Troubleshooting MS or Contractor Success School have ads?
Which is updated more often, Electrical Troubleshooting MS or Contractor Success School?
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