# Bluon HVAC vs EPA 608 Certification Prep

The clearest difference is in-app purchases: Bluon HVAC at none against EPA 608 Certification Prep's 1. Bluon HVAC also leads on iOS requirement (15.1 vs 17.0). EPA 608 Certification Prep's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. EPA 608 Certification Prep sells 1 one-off in-app purchase. Bluon HVAC asks for nothing beyond the download.

Bluon HVAC ships an update monthly, EPA 608 Certification Prep every 2 weeks. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Bluon HVAC | EPA 608 Certification Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4.5K ratings)](https://appshunter.io/ios/app/bluon-hvac/id1357521880/reviews)** | — |
| Number of ratings | **4.5K** | — |
| Positive reviews | 54.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 170 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bluon, Inc.](https://appshunter.io/developer/1357521879) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### Bluon HVAC

[App page](https://appshunter.io/ios/app/bluon-hvac/id1357521880)

Access a vast database of HVAC models, manuals, and part lists to speed up your work. Utilize an AI-powered troubleshooting tool or connect with experienced technicians for real-time support.

**Highlights:** 500,000+ HVAC unit database, Manuals and part lists, AI troubleshooting tool (MasterMechanic), Live support from veteran techs, HVAC industry upgrade tools

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

**In-app purchases:** none

**What reviewers like**

- 🤖 Helpful tech support
- 💯 Comprehensive database of manuals and information
- 🛠️ Useful tools and calculators
- 🤝 Great customer service

**What reviewers complain about**

- 💰 Paywall for advanced features
- 🔒 Limited access without company account
- 🔍 Missing manuals for some equipment models
- 🗣️ Removal of helpful forums

**Reported bugs**

- Login/password reset issues
- Frequent crashes or loading problems

**Requested features**

- Individual technician subscription option
- More comprehensive coverage of HVAC equipment models
- Ability to access full manuals without restrictions


### EPA 608 Certification Prep

[App page](https://appshunter.io/ios/app/epa-608-certification-prep/id6762461807)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Certification Prep | $9.99 | one-time |


## Frequently asked questions

### Is Bluon HVAC free?

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

### Is EPA 608 Certification Prep free?

EPA 608 Certification Prep is free to download, with in-app purchases available.

### Do Bluon HVAC or EPA 608 Certification Prep have ads?

Bluon HVAC shows ads; EPA 608 Certification Prep does not.

### Which is updated more often, Bluon HVAC or EPA 608 Certification Prep?

Bluon HVAC ships an update monthly, and EPA 608 Certification Prep every 2 weeks. Most recently, Bluon HVAC was updated on October 29, 2026 and EPA 608 Certification Prep on October 31, 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.*