# MultiPipe Calculator vs 风管计算器

The clearest difference is in-app purchases: MultiPipe Calculator at none against 风管计算器's 4. 风管计算器's advantage is update cadence (every 4 days vs every 5 months) and iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 风管计算器 sells 4 in-app purchases, starting at $0.99 per month. MultiPipe Calculator asks for nothing beyond the download.

MultiPipe Calculator ships an update every 5 months, 风管计算器 every 4 days. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | MultiPipe Calculator | 风管计算器 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 days** |
| Size | 3 MB | 62 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [algormula Pte. Ltd.](https://appshunter.io/developer/1828508832) | [强 余](https://appshunter.io/developer/1116393375) |

## What reviewers say

### MultiPipe Calculator

[App page](https://appshunter.io/ios/app/multipipe-calculator/id6744306540)

**In-app purchases:** none


### 风管计算器

[App page](https://appshunter.io/ios/app/id6757332165)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC_1_Month | $0.99 | per month |
| HVAC_3_Month | $1.99 | per 3 months |
| HVAC_6_Month | $3.99 | per 6 months |
| HVAC_1_Year | $5.99 | per year |


## Frequently asked questions

### Is MultiPipe Calculator free?

MultiPipe Calculator is free to download, with no in-app purchases.

### Is 风管计算器 free?

风管计算器 is free to download, with in-app purchases available.

### Do MultiPipe Calculator or 风管计算器 have ads?

Neither MultiPipe Calculator nor 风管计算器 shows ads.

### Which is updated more often, MultiPipe Calculator or 风管计算器?

MultiPipe Calculator ships an update every 5 months, and 风管计算器 every 4 days. Most recently, MultiPipe Calculator was updated on October 24, 2026 and 风管计算器 on October 3, 2026.

---

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