# HVAC School vs Electrical Troubleshooting MS

The clearest difference is update cadence: Electrical Troubleshooting MS at weekly against HVAC School's every 5 weeks. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for HVAC School against 4.8 for Electrical Troubleshooting MS. Both are backed by a comparable volume of ratings — 85 and 122 respectively. Written reviews are what separate them: 83% of HVAC School's written reviews are positive against 88% of Electrical Troubleshooting MS's.

HVAC School ships an update every 5 weeks, Electrical Troubleshooting MS weekly. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | HVAC School | Electrical Troubleshooting MS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (85 ratings)](https://appshunter.io/ios/app/hvac-school/id1436085954/reviews)** | [4.8 (122 ratings)](https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews) |
| Number of ratings | 85 | **122** |
| Positive reviews | 82.8% of reviews | **88.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 30 MB | 22 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kalos Services Inc.](https://appshunter.io/developer/1435107751) | [David White](https://appshunter.io/developer/911163945) |

## What reviewers say

### HVAC School

[App page](https://appshunter.io/ios/app/hvac-school/id1436085954)

This app serves as a comprehensive resource for HVAC technicians, offering a podcast, tech tip articles, and interactive calculators. It aims to enhance knowledge of HVAC theory, industry updates, and essential mathematics for both current and aspiring professionals.

**Highlights:** HVAC School podcast episodes, Tech tip articles by professionals, Interactive HVAC equation calculators, Industry knowledge and theory, Up-to-date industry information

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is HVAC School free?

HVAC School is free to download, with no in-app purchases.

### Is Electrical Troubleshooting MS free?

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

### Which has better reviews, HVAC School or Electrical Troubleshooting MS?

HVAC School is rated higher. HVAC School averages 4.8 out of 5 from 85 ratings, while Electrical Troubleshooting MS averages 4.8 from 122 ratings.

### Do HVAC School or Electrical Troubleshooting MS have ads?

Neither HVAC School nor Electrical Troubleshooting MS shows ads.

### Which is updated more often, HVAC School or Electrical Troubleshooting MS?

HVAC School ships an update every 5 weeks, and Electrical Troubleshooting MS weekly. Most recently, HVAC School was updated on October 21, 2026 and Electrical Troubleshooting MS 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.*