# Electrical Troubleshooting MS vs Musical Intervals

The clearest difference is price: Electrical Troubleshooting MS at Free against Musical Intervals's $0.99. Electrical Troubleshooting MS also leads on iOS requirement (13.0 vs 15.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Electrical Troubleshooting MS is free to download; Musical Intervals costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electrical Troubleshooting MS ships an update weekly, Musical Intervals fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Electrical Troubleshooting MS | Musical Intervals |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (122 ratings)](https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews)** | — |
| Number of ratings | **122** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 22 MB | 41 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David White](https://appshunter.io/developer/911163945) | [Massimiliano Annibali](https://appshunter.io/developer/6773366500) |

## 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


### Musical Intervals

[App page](https://appshunter.io/ios/app/musical-intervals/id6787444163)

**Features:** macOS Compatibility, Vision Pro support

**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 Musical Intervals free?

Musical Intervals costs $0.99, with no in-app purchases.

### Do Electrical Troubleshooting MS or Musical Intervals have ads?

Neither Electrical Troubleshooting MS nor Musical Intervals shows ads.

### Which is updated more often, Electrical Troubleshooting MS or Musical Intervals?

Electrical Troubleshooting MS ships an update weekly, and Musical Intervals fortnightly. Most recently, Electrical Troubleshooting MS was updated on November 3, 2026 and Musical Intervals on October 31, 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.*