# Interplay Learning vs HVAC Know It All

The clearest difference is review sentiment: HVAC Know It All at 84% against Interplay Learning's 27%. HVAC Know It All also leads on rating (4.8 vs 3.9) and ratings volume (221 vs 48). Interplay Learning's advantage is update cadence (every 2 months vs every 6 months) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Interplay Learning sells 1 in-app purchase, starting at $54.00 per month 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 3.9. Both are backed by a comparable volume of ratings — 48 and 221 respectively. Written reviews point the same way: 27% of Interplay Learning's written reviews are positive against 84% of HVAC Know It All's.

Interplay Learning ships an update every 2 months, HVAC Know It All every 6 months. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Interplay Learning | HVAC Know It All |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (48 ratings)](https://appshunter.io/ios/app/interplay-learning/id1465704946/reviews) | **[4.8 (221 ratings)](https://appshunter.io/ios/app/hvac-know-it-all/id1548260016/reviews)** |
| Number of ratings | 48 | **221** |
| Positive reviews | 26.7% of reviews | **83.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Subscription | Subscription |
| Size | 135 MB | 67 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Interplay Learning Inc.](https://appshunter.io/developer/661131444) | [HVAC Know It All Inc.](https://appshunter.io/developer/1548260018) |

## What reviewers say

### Interplay Learning

[App page](https://appshunter.io/ios/app/interplay-learning/id1465704946)

This platform offers subscription-based training for skilled trades, creating job-ready workers and upskilling existing ones. Access hundreds of hours of expert-led content in HVAC, plumbing, electrical, and more, with on-demand assessments to track progress.

**Highlights:** Expert-led training content, On-demand assessments, Certification exam prep, Bite-sized training videos, Progress tracking, Anytime, anywhere access

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Monthly | $54.00 | per month |


### 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 Interplay Learning free?

Interplay Learning 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, Interplay Learning or HVAC Know It All?

HVAC Know It All is rated higher. Interplay Learning averages 3.9 out of 5 from 48 ratings, while HVAC Know It All averages 4.8 from 221 ratings.

### Do Interplay Learning or HVAC Know It All have ads?

Neither Interplay Learning nor HVAC Know It All shows ads.

### Which is updated more often, Interplay Learning or HVAC Know It All?

Interplay Learning ships an update every 2 months, and HVAC Know It All every 6 months. Most recently, Interplay Learning was updated on September 9, 2026 and HVAC Know It All on September 17, 2026.

---

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