# Electrical Troubleshooting MS vs Impedance Calculators

The clearest difference is in-app purchases: Electrical Troubleshooting MS at none against Impedance Calculators's 1. Electrical Troubleshooting MS also leads on ads (none vs shown) and update cadence (weekly vs every 21 months). Impedance Calculators's advantage is rating (5.0 vs 4.8). On price and device support there is nothing between them.

Both are free to download. Impedance Calculators sells 1 one-off in-app purchase. Electrical Troubleshooting MS asks for nothing beyond the download.

Impedance Calculators holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Electrical Troubleshooting MS has 122 ratings behind it against 13, so its average is the more settled of the two.

Electrical Troubleshooting MS ships an update weekly, Impedance Calculators every 21 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | Electrical Troubleshooting MS | Impedance Calculators |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (122 ratings)](https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews) | **[5.0 (13 ratings)](https://appshunter.io/ios/app/impedance-calculators/id1571901358/reviews)** |
| Number of ratings | **122** | 13 |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 21 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 22 MB | 8 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David White](https://appshunter.io/developer/911163945) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## 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


### Impedance Calculators

[App page](https://appshunter.io/ios/app/impedance-calculators/id1571901358)

This app provides 8 calculators for electrical impedance calculations. It covers various combinations of resistors, inductors, and capacitors in series and parallel circuits, offering formulas and circuit diagrams.

**Highlights:** Series impedance calculator, Parallel impedance calculator, R, L, & C circuit calculations, Includes formulas, Circuit diagrams provided, 8 distinct calculators

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Electrical Troubleshooting MS free?

Electrical Troubleshooting MS is free to download, with no in-app purchases.

### Is Impedance Calculators free?

Impedance Calculators is free to download, with in-app purchases available.

### Which has better reviews, Electrical Troubleshooting MS or Impedance Calculators?

Impedance Calculators is rated higher. Electrical Troubleshooting MS averages 4.8 out of 5 from 122 ratings, while Impedance Calculators averages 5.0 from 13 ratings.

### Do Electrical Troubleshooting MS or Impedance Calculators have ads?

Impedance Calculators shows ads; Electrical Troubleshooting MS does not.

### Which is updated more often, Electrical Troubleshooting MS or Impedance Calculators?

Electrical Troubleshooting MS ships an update weekly, and Impedance Calculators every 21 months. Most recently, Electrical Troubleshooting MS was updated on October 23, 2026 and Impedance Calculators on October 23, 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.*