# 钣金展平 vs 管道计算器Pro

钣金展平 and 管道计算器Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 钣金展平 sells 4 in-app purchases, starting at $0.99 per month and 管道计算器Pro sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

钣金展平 ships an update every 3 weeks, 管道计算器Pro every 2 weeks. The most recent releases landed on August 12, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 钣金展平 | 管道计算器Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1593710344/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 13.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 29 MB | 52 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [强 余](https://appshunter.io/developer/1116393375) | [ChenShu Zhuang](https://appshunter.io/developer/1477949813) |

## What reviewers say

### 钣金展平

[App page](https://appshunter.io/ios/app/id1593710344)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SheetMetal_1_Month | $0.99 | per month |
| SheetMetal_3_Month | $2.49 | per 3 months |
| SheetMetal_6_Month | $4.49 | per 6 months |
| SheetMetal_1_Year | $7.99 | per year |


### 管道计算器Pro

[App page](https://appshunter.io/ios/app/pro/id6758931508)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $3.99 | one-time |
| 年度会员 | $14.99 | one-time |
| 永久会员 | $29.99 | one-time |


## Frequently asked questions

### Is 钣金展平 free?

钣金展平 is free to download, with in-app purchases available.

### Is 管道计算器Pro free?

管道计算器Pro is free to download, with in-app purchases available.

### Do 钣金展平 or 管道计算器Pro have ads?

Neither 钣金展平 nor 管道计算器Pro shows ads.

### Which is updated more often, 钣金展平 or 管道计算器Pro?

钣金展平 ships an update every 3 weeks, and 管道计算器Pro every 2 weeks. Most recently, 钣金展平 was updated on August 12, 2026 and 管道计算器Pro on September 28, 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.*