# 结构大师HD vs CADraw

The clearest difference is rating: CADraw at 2.9 against 结构大师HD's 2.0. CADraw also leads on update cadence (fortnightly vs every 2 months) and ratings volume (10 vs 1). 结构大师HD's advantage is iOS requirement (9.0 vs 13.0). On price, ads, 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 CADraw sells 6 in-app purchases, starting at $1.39 per month. Whichever you choose, the download price is not the number that matters.

CADraw holds the better App Store score, 2.9 against 2.0. That said, the two scores are not equally well evidenced: CADraw has 10 ratings behind it against 1, so its average is the more settled of the two.

结构大师HD ships an update every 2 months, CADraw fortnightly. The most recent releases landed on June 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 结构大师HD | CADraw |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/hd/id1059035629/reviews) | **[2.9 (10 ratings)](https://appshunter.io/ios/app/cadraw/id1526269907/reviews)** |
| Number of ratings | 1 | **10** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 102 MB | 175 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) | [诚 张](https://appshunter.io/developer/1526266877) |

## 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 |


### CADraw

[App page](https://appshunter.io/ios/app/cadraw/id1526269907)

Create and edit precise technical drawings with a variety of tools. Supports layers, annotations, and export to common formats like PDF and DXF. Ideal for detailed design work on mobile devices.

**Highlights:** Draw lines, circles, arcs, Shape editing and modification, Angle constraints, Endpoint and midpoint snapping, Numeric keypad for precise input, Layer management, Annotation tools, Export to PDF and DXF

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.39 | per month |
| per month | $2.99 | per month |
| Annual subscription | $13.90 | per year |
| per year | $26.00 | per year |
| Upgrade to the full version | $69.99 | one-time |
| Full version | $99.99 | 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 CADraw free?

CADraw is free to download, with in-app purchases available.

### Which has better reviews, 结构大师HD or CADraw?

CADraw is rated higher. 结构大师HD averages 2.0 out of 5 from 1 ratings, while CADraw averages 2.9 from 10 ratings.

### Do 结构大师HD or CADraw have ads?

Neither 结构大师HD nor CADraw shows ads.

### Which is updated more often, 结构大师HD or CADraw?

结构大师HD ships an update every 2 months, and CADraw fortnightly. Most recently, 结构大师HD was updated on June 24, 2026 and CADraw on September 20, 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.*