# Electrical Troubleshooting MS vs Instrument Tech School

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.

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, Instrument Tech School fortnightly. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Electrical Troubleshooting MS | Instrument Tech School |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (118 ratings)](https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews)** | — |
| Number of ratings | **118** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 22 MB | 46 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David White](https://appshunter.io/developer/911163945) | [Javier Zuazua](https://appshunter.io/developer/1782023473) |

## What reviewers say

### Electrical Troubleshooting MS

[App page](https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Instrument Tech School

[App page](https://appshunter.io/ios/app/instrument-tech-school/id6738712153)

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*