Contractors License Exam Prep vs Electrical Troubleshooting MS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Contractors License Exam Prep
Prepare for your California contractors license exam with practice tests, instructional videos, and an application review system. Upload your completed application for expert feedback and corrections.
- Practice Exams
- Application Videos
- Video Course
- Audio Course
- Application Review System
- Student Account Access
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This app is for students of Contractors Intelligence School. It is available for currently enrolled students. This app helps students get prepared for their California contractors license exam. The app contains access to the following tools: Practice Exams Application Videos Video Course Audio Course Resources Application Review System Student's Account This app allows users to watch instructional videos for application help. These videos will walk the user through the California contractors license application process. The user is then able to take a picture of the completed application and upload it into their account for Contractors Intelligence School staff to review the application and give suggested corrections. These corrections can also be viewed through the user's account. This app allows users to take Practice Exams. The app remembers users, therefore it is not necessary for the user to re-login every single time. So, if the user has only few minutes to study, this app allows him or her to take practice exams without wasting time. This app is exclusively available through Contractors Intelligence School and requires the user to have an existing account.
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.
Screenshots
Verdict
The clearest difference is in-app purchases: Electrical Troubleshooting MS at none against Contractors License Exam Prep's 2. Electrical Troubleshooting MS also leads on update cadence (weekly vs every 5 weeks) and iOS requirement (13.0 vs 15.1). Contractors License Exam Prep's advantage is ratings volume (787 vs 122). On price, rating, review sentiment and ads 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. Contractors License Exam Prep sells 2 one-off in-app purchases. Electrical Troubleshooting MS asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Contractors License Exam Prep against 4.8 for Electrical Troubleshooting MS. That said, the two scores are not equally well evidenced: Contractors License Exam Prep has 787 ratings behind it against 122, so its average is the more settled of the two. Written reviews are what separate them: 85% of Contractors License Exam Prep's written reviews are positive against 88% of Electrical Troubleshooting MS's.
Contractors License Exam Prep ships an update every 5 weeks, Electrical Troubleshooting MS weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Contractors License Exam Prep | Electrical Troubleshooting MS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (787 ratings) | 4.8 (122 ratings) — better |
| Positive reviews | 84.6% of reviews | 88.2% of reviews — better |
| Number of ratings | 787 — better | 122 |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Contractors Intelligence School, Inc. | David White |
Customer experience
Contractors License Exam Prep
Electrical Troubleshooting MS
Bugs and requests
Contractors License Exam Prep
Reported bugs
3 issues- Login issues and lost progress
- Compatibility problems on older devices
- Playback errors in audio courses
Requested features
4 requests- Landscape mode support
- Offline access to study materials
- More trade-specific practice questions
- Improved math and calculation tools
Electrical Troubleshooting MS
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Contractors License Exam Prep
- 30-Days Law & Business Course$149.99
- 30-Days Trade Course$149.99
Electrical Troubleshooting MS
No in-app purchases
Questions
Is Contractors License Exam Prep free?
Is Electrical Troubleshooting MS free?
Which has better reviews, Contractors License Exam Prep or Electrical Troubleshooting MS?
Do Contractors License Exam Prep or Electrical Troubleshooting MS have ads?
Which is updated more often, Contractors License Exam Prep or Electrical Troubleshooting MS?
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