# 结构大师HD vs 型钢截面特性

The clearest difference is in-app purchases: 型钢截面特性 at none against 结构大师HD's 4. 结构大师HD's advantage is ads (none vs shown) and update cadence (every 2 months vs every 4 months). On price and device support there is nothing between them.

Both are free to download. 结构大师HD sells 4 one-off in-app purchases. 型钢截面特性 asks for nothing beyond the download.

结构大师HD ships an update every 2 months, 型钢截面特性 every 4 months. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 结构大师HD | 型钢截面特性 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/hd/id1059035629/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 63.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 102 MB | 7 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | iPad | **iPhone, iPad** |
| 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 |


### 型钢截面特性

[App page](https://appshunter.io/ios/app/id1124320935)

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

**In-app purchases:** none


## 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 型钢截面特性 free?

型钢截面特性 is free to download, with no in-app purchases.

### Do 结构大师HD or 型钢截面特性 have ads?

型钢截面特性 shows ads; 结构大师HD does not.

### Which is updated more often, 结构大师HD or 型钢截面特性?

结构大师HD ships an update every 2 months, and 型钢截面特性 every 4 months. Most recently, 结构大师HD was updated on October 6, 2026 and 型钢截面特性 on October 24, 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.*