# PipeChecker vs 空気状態の計算

The clearest difference is price: 空気状態の計算 at Free against PipeChecker's $7.99. PipeChecker's advantage is in-app purchases (none vs 2) and device support.

空気状態の計算 is free to download; PipeChecker costs $7.99 up front. 空気状態の計算 sells 2 in-app purchases, starting at $0.49 per month. PipeChecker asks for nothing beyond the download.

## The numbers

| Metric | PipeChecker | 空気状態の計算 |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 27 MB | 1 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) | [Sho Akita](https://appshunter.io/developer/1743635853) |

## What reviewers say

### PipeChecker

[App page](https://appshunter.io/ios/app/pipechecker/id1632174229)

This tool assists HVAC, sanitary, and plant piping engineers in selecting optimal pressure piping sizes with simple operations. It streamlines the design process for piping equipment technicians.

**Highlights:** Optimal pressure pipe sizing, Simplified operation, For piping equipment technicians, Supports HVAC, sanitary, and plant systems

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

**In-app purchases:** none


### 空気状態の計算

[App page](https://appshunter.io/ios/app/id6504130643)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1ヶ月利用 -アプリ内の計算ツールの利用権- | $0.49 | per month |
| 1年間利用 -アプリ内の計算ツールの利用権- | $4.99 | per year |


## Frequently asked questions

### Is PipeChecker free?

PipeChecker costs $7.99, with no in-app purchases.

### Is 空気状態の計算 free?

空気状態の計算 is free to download, with in-app purchases available.

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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.*