# AirDiffuser vs Beam Calc

The clearest difference is price: Beam Calc at Free against AirDiffuser's $2.99. AirDiffuser's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). On ads and device support there is nothing between them.

Beam Calc is free to download; AirDiffuser costs $2.99 up front. Beam Calc sells 1 one-off in-app purchase. AirDiffuser asks for nothing beyond the download.

## The numbers

| Metric | AirDiffuser | Beam Calc |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/airdiffuser/id441746795/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 60 months | — |
| Monetization | Paid | — |
| Size | 4 MB | 22 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Technical Data Service Co.,Ltd.](https://appshunter.io/developer/441746798) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### AirDiffuser

[App page](https://appshunter.io/ios/app/airdiffuser/id441746795)

Quickly select air ceiling diffusers for HVAC systems. Input wind amount to calculate apparatus size and wind velocity. Supports various diffuser types and customizable settings for site and meeting use.

**Highlights:** Easy apparatus size selection by wind amount input, Supports various diffuser types (Round, Square, BL, CL, etc.), Adjustable aperture rate and wind velocity, Reverse calculation of wind amount, Metric system calculations, Calculations for BL and CL round length

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

**In-app purchases:** none


### Beam Calc

[App page](https://appshunter.io/ios/app/beam-calc-structural-analysis/id6804665476)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| pro version | $2.99 | one-time |


## Frequently asked questions

### Is AirDiffuser free?

AirDiffuser costs $2.99, with no in-app purchases.

### Is Beam Calc free?

Beam Calc is free to download, with in-app purchases available.

### Do AirDiffuser or Beam Calc have ads?

Neither AirDiffuser nor Beam Calc shows ads.

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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.*