# HVAC Know It All vs Electrical Troubleshooting MS

The clearest difference is in-app purchases: Electrical Troubleshooting MS at none against HVAC Know It All's 2. Electrical Troubleshooting MS also leads on update cadence (weekly vs every 6 months) and device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. HVAC Know It All sells 2 in-app purchases, starting at $0.99 per month. Electrical Troubleshooting MS asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for HVAC Know It All against 4.8 for Electrical Troubleshooting MS. Both are backed by a comparable volume of ratings — 224 and 122 respectively. Written reviews are what separate them: 84% of HVAC Know It All's written reviews are positive against 88% of Electrical Troubleshooting MS's.

HVAC Know It All ships an update every 6 months, Electrical Troubleshooting MS weekly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | HVAC Know It All | Electrical Troubleshooting MS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (224 ratings)](https://appshunter.io/ios/app/hvac-know-it-all/id1548260016/reviews)** | [4.8 (122 ratings)](https://appshunter.io/ios/app/electrical-troubleshooting-ms/id1562565451/reviews) |
| Number of ratings | **224** | 122 |
| Positive reviews | 83.7% of reviews | **88.2% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Subscription | **Free** |
| Size | 67 MB | 22 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [HVAC Know It All Inc.](https://appshunter.io/developer/1548260018) | [David White](https://appshunter.io/developer/911163945) |

## What reviewers say

### HVAC Know It All

[App page](https://appshunter.io/ios/app/hvac-know-it-all/id1548260016)

Connect with HVAC/R professionals to enhance your skills through educational discussions. This app aims to help technicians, installers, owners, educators, and students improve their expertise in the trade.

**Highlights:** Educational discussions, Professional networking, Skill enhancement, Trade knowledge sharing, Technician resources

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $9.99 | per year |

**What reviewers like**

- 👍 Excellent community for tradespeople
- 💡 Vast knowledge sharing among professionals
- 🚀 Game-changer for HVAC technicians
- 🤝 Supportive and non-judgmental environment
- 📚 Great resource for learning and growth

**What reviewers complain about**

- 💰 Forced to pay before accessing content
- 🤔 Subscription fee not clearly stated upfront
- 🚫 App makes you pay before you can test it
- 📉 Limited content in residential group
- ❓ Suspect 5-star reviews, potentially fake

**Requested features**

- More content for the residential group


### 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 Know It All free?

HVAC Know It All is free to download, with in-app purchases available.

### Is Electrical Troubleshooting MS free?

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

### Which has better reviews, HVAC Know It All or Electrical Troubleshooting MS?

HVAC Know It All is rated higher. HVAC Know It All averages 4.8 out of 5 from 224 ratings, while Electrical Troubleshooting MS averages 4.8 from 122 ratings.

### Do HVAC Know It All or Electrical Troubleshooting MS have ads?

Neither HVAC Know It All nor Electrical Troubleshooting MS shows ads.

### Which is updated more often, HVAC Know It All or Electrical Troubleshooting MS?

HVAC Know It All ships an update every 6 months, and Electrical Troubleshooting MS weekly. Most recently, HVAC Know It All was updated on October 24, 2026 and Electrical Troubleshooting MS on October 30, 2026.

---

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