# WARDFLex Sizing System vs Bluon HVAC

The clearest difference is rating: Bluon HVAC at 4.8 against WARDFLex Sizing System's 3.0. Bluon HVAC also leads on ratings volume (4.5K vs 2) and device support (3 vs 1). WARDFLex Sizing System's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bluon HVAC holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Bluon HVAC has 4.5K ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | WARDFLex Sizing System | Bluon HVAC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/wardflex-sizing-system/id1118498330/reviews) | **[4.8 (4.5K ratings)](https://appshunter.io/ios/app/bluon-hvac/id1357521880/reviews)** |
| Number of ratings | 2 | **4.5K** |
| Positive reviews | — | 54.6% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Monthly |
| Monetization | **Free** | Ad-supported |
| Size | 45 MB | 170 MB |
| Requires iOS | **7.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ward Manufacturing LLC](https://appshunter.io/developer/848165571) | [Bluon, Inc.](https://appshunter.io/developer/1357521879) |

## What reviewers say

### WARDFLex Sizing System

[App page](https://appshunter.io/ios/app/wardflex-sizing-system/id1118498330)

Easily size your WARDFlex piping systems on the go. This tool lets you draw your gas piping layout, calculate necessary tubing sizes, and generate a Bill of Materials for your installation.

**Highlights:** Draw gas piping systems visually, Calculate WARDFlex CSST and black iron pipe sizes, Generate Bill of Materials, Save projects for future use, Choose supply pressure and pressure drop

**In-app purchases:** none


### 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


## Frequently asked questions

### Is WARDFLex Sizing System free?

WARDFLex Sizing System is free to download, with no in-app purchases.

### Is Bluon HVAC free?

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

### Which has better reviews, WARDFLex Sizing System or Bluon HVAC?

Bluon HVAC is rated higher. WARDFLex Sizing System averages 3.0 out of 5 from 2 ratings, while Bluon HVAC averages 4.8 from 4.5K ratings.

### Do WARDFLex Sizing System or Bluon HVAC have ads?

Bluon HVAC shows ads; WARDFLex Sizing System does not.

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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.*