# 结构大师HD vs 钢材清单

The clearest difference is ads: 结构大师HD at none against 钢材清单's shown. 结构大师HD also leads on update cadence (every 2 months vs every 15 months) and iOS requirement (9.0 vs 13.0). 钢材清单's advantage is device support (3 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. 结构大师HD sells 4 one-off in-app purchases and 钢材清单 sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

结构大师HD ships an update every 2 months, 钢材清单 every 15 months. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 结构大师HD | 钢材清单 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/hd/id1059035629/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 73.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 15 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 102 MB | 5 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [颖达 陈](https://appshunter.io/developer/1058507663) | [疆 边](https://appshunter.io/developer/1124320934) |

## What reviewers say

### 结构大师HD

[App page](https://appshunter.io/ios/app/hd/id1059035629)

This app provides structural analysis and mechanics calculations for structural engineers and field engineers on tablets. It offers advanced features like internal force diagrams, dynamics, influence lines, and AI-powered step-by-step solutions for various methods. The VIP version unlocks additional engineering modules, customization options, and reporting capabilities.

**Highlights:** Convenient modeling with touch input, Internal force diagrams and dynamics, AI-powered step-by-step solutions, Support for structural design and large structures, VIP features: engineering modules, custom sections, dark theme, Cross-platform compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 打赏 | $1.99 | one-time |
| 高级功能购买 | $3.99 | one-time |
| 解锁当前版本SMHD | $19.99 | one-time |
| 解锁全版本 | $24.99 | one-time |


### 钢材清单

[App page](https://appshunter.io/ios/app/id1297108312)

This app calculates the weight and cost of various steel materials based on type, length, and quantity. It offers custom input options, price and tax calculations, and data export to CSV. A free version has limitations on steel types and saved lists.

**Highlights:** Supports 29 types of steel, Automatic weight calculation, Custom material input, Price and tax calculation, Export to CSV, Trash recovery, iCloud data sync

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 正式版 | $0.99 | per month |
| 正式版 | $3.49 | per year |
| 完整版 | $6.99 | one-time |


## Frequently asked questions

### Is 结构大师HD free?

结构大师HD is free to download, with in-app purchases available.

### Is 钢材清单 free?

钢材清单 is free to download, with in-app purchases available.

### Do 结构大师HD or 钢材清单 have ads?

钢材清单 shows ads; 结构大师HD does not.

### Which is updated more often, 结构大师HD or 钢材清单?

结构大师HD ships an update every 2 months, and 钢材清单 every 15 months. Most recently, 结构大师HD was updated on October 6, 2026 and 钢材清单 on October 10, 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.*