# HVAC practice test vs HVAC Know It All

The clearest difference is monetization model: HVAC practice test at free with in-app purchases against HVAC Know It All's subscription. HVAC practice test also leads on update cadence (every 2 months vs every 6 months) and device support (3 vs 1). HVAC Know It All's advantage is review sentiment (84% vs 57%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. HVAC practice test sells 2 in-app purchases, starting at $4.99 per year and HVAC Know It All sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

HVAC Know It All holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 446 and 224 respectively. Written reviews point the same way: 57% of HVAC practice test's written reviews are positive against 84% of HVAC Know It All's.

HVAC practice test ships an update every 2 months, HVAC Know It All every 6 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HVAC practice test | HVAC Know It All |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (446 ratings)](https://appshunter.io/ios/app/hvac-practice-test/id1125272284/reviews) | **[4.8 (224 ratings)](https://appshunter.io/ios/app/hvac-know-it-all/id1548260016/reviews)** |
| Number of ratings | **446** | 224 |
| Positive reviews | 57.1% of reviews | **83.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 143 MB | 67 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Hung Nguyen](https://appshunter.io/developer/1069358007) | [HVAC Know It All Inc.](https://appshunter.io/developer/1548260018) |

## What reviewers say

### HVAC practice test

[App page](https://appshunter.io/ios/app/hvac-practice-test/id1125272284)

Prepare for HVAC certification exams with extensive practice questions and flashcards. Track your progress, identify strengths and weaknesses, and study effectively with detailed analytics and a personalized review calendar. Access study materials offline and in dark mode.

**Highlights:** +2000 expert-written practice questions, Detailed analytics of strengths and weaknesses, Personalized daily review calendar, Offline mode access, Dark mode support, Flashcards for critical concepts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Basic | $4.99 | per year |
| HVAC Premium | $6.99 | per year |

**What reviewers like**

- 👍 Good for beginners
- 👍 Useful for practice
- 👍 Good for staying sharp
- 👍 Useful content for studying
- 👍 Nice app for new techs

**What reviewers complain about**

- 🐛 Poorly worded questions
- 🐛 Errors throughout the app
- 🐛 Incorrect information
- 🐛 Questionable wording
- 🐛 Sentence fragments in questions

**Reported bugs**

- Errors throughout the app
- Wrong or conflicting answers
- Numbers are off
- Ads get in the way of buttons

**Requested features**

- Provide explanations for correct answers
- Translate to French
- Add more practice sections (e.g., static pressure, duct systems)
- Revise incorrect answers and get expert insight


### 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


## Frequently asked questions

### Is HVAC practice test free?

HVAC practice test is free to download, with in-app purchases available.

### Is HVAC Know It All free?

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

### Which has better reviews, HVAC practice test or HVAC Know It All?

HVAC Know It All is rated higher. HVAC practice test averages 4.6 out of 5 from 446 ratings, while HVAC Know It All averages 4.8 from 224 ratings.

### Do HVAC practice test or HVAC Know It All have ads?

Neither HVAC practice test nor HVAC Know It All shows ads.

### Which is updated more often, HVAC practice test or HVAC Know It All?

HVAC practice test ships an update every 2 months, and HVAC Know It All every 6 months. Most recently, HVAC practice test was updated on November 2, 2026 and HVAC Know It All on November 3, 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.*