# 608 Practice vs HVAC School

The clearest difference is price: HVAC School at Free against 608 Practice's $12.99. HVAC School also leads on rating (4.8 vs 3.9) and review sentiment (83% vs 60%). 608 Practice's advantage is chart position (#19 vs unranked). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

HVAC School is free to download; 608 Practice costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HVAC School holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 120 and 85 respectively. Written reviews point the same way: 60% of 608 Practice's written reviews are positive against 83% of HVAC School's.

608 Practice ships an update every 6 weeks, HVAC School every 5 weeks. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 608 Practice | HVAC School |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | [3.9 (120 ratings)](https://appshunter.io/ios/app/608-practice/id1422450628/reviews) | **[4.8 (85 ratings)](https://appshunter.io/ios/app/hvac-school/id1436085954/reviews)** |
| Number of ratings | **120** | 85 |
| Positive reviews | 60.0% of reviews | **82.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free | Free |
| Best chart rank | **#19** | — |
| Size | 28 MB | 30 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [After Hours Data Systems LLC](https://appshunter.io/developer/573215695) | [Kalos Services Inc.](https://appshunter.io/developer/1435107751) |

## What reviewers say

### 608 Practice

[App page](https://appshunter.io/ios/app/608-practice/id1422450628)

**Currently charting:** #19 Top Paid · Education (US App Store)

Prepare for your EPA 608 certification with hundreds of up-to-date practice questions. The app offers both a practice mode and a timed test mode with detailed review to help you identify areas needing improvement across Core, Type I, Type II, and Type III exams.

**Highlights:** Hundreds of practice questions, Up-to-date content (2018-2020), Core, Type I, II, III exam sections, Practice mode, Timed test mode, Review missed questions

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

**In-app purchases:** none

**What reviewers like**

- 💯 Questions similar to test
- ✅ Helped pass exam
- 👍 Great study tool
- 💰 Worth the price
- 📚 Comprehensive content

**What reviewers complain about**

- 🐛 Outdated questions
- 🐛 App bugs and glitches
- 🐛 Poor optimization
- 🐛 Incorrect answers provided
- 🐛 Unstable performance

**Reported bugs**

- App crashes
- App freezes
- Screen rotation causes app to stop working
- Answers marked incorrectly
- App not working with iOS 13

**Requested features**

- Restore old version
- Allow viewing all questions
- Add mode for fewer questions
- Shuffle questions option
- Bookmark questions


### 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


## Frequently asked questions

### Is 608 Practice free?

608 Practice costs $12.99, with no in-app purchases.

### Is HVAC School free?

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

### Which has better reviews, 608 Practice or HVAC School?

HVAC School is rated higher. 608 Practice averages 3.9 out of 5 from 120 ratings, while HVAC School averages 4.8 from 85 ratings.

### Do 608 Practice or HVAC School have ads?

Neither 608 Practice nor HVAC School shows ads.

### Which is updated more often, 608 Practice or HVAC School?

608 Practice ships an update every 6 weeks, and HVAC School every 5 weeks. Most recently, 608 Practice was updated on October 25, 2026 and HVAC School on October 21, 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.*