# 结构大师HD vs MindTwigs

The clearest difference is rating: MindTwigs at 4.9 against 结构大师HD's 2.0. MindTwigs also leads on monetization model (free vs free with in-app purchases) and ratings volume (10 vs 1). 结构大师HD's advantage is iOS requirement (9.0 vs 13.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. 结构大师HD sells 4 one-off in-app purchases and MindTwigs sells 19 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

MindTwigs holds the better App Store score, 4.9 against 2.0. That said, the two scores are not equally well evidenced: MindTwigs 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, MindTwigs every 3 weeks. The most recent releases landed on June 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 结构大师HD | MindTwigs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/hd/id1059035629/reviews) | **[4.9 (10 ratings)](https://appshunter.io/ios/app/mindtwigs/id1564236678/reviews)** |
| Number of ratings | 1 | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 102 MB | 165 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [颖达 陈](https://appshunter.io/developer/1058507663) | [Suzhou Zhixi Information Technology Co., Ltd.](https://appshunter.io/developer/1564236680) |

## 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 |


### MindTwigs

[App page](https://appshunter.io/ios/app/mindtwigs/id1564236678)

This app offers a user-friendly platform for creating diverse mind maps and visual diagrams. It supports cross-platform synchronization, a vast library of templates, and extensive customization options for personalized creations. Easily share your ideas and plans with a clear interface designed for focused thinking.

**Highlights:** Cross-platform cloud sync, 12 innovative mind mapping structures, Unlimited nodes and exports, 12,000+ free templates, Customizable node shapes, colors, and fonts, Insert pictures, icons, and relationship lines

**Features:** Vision Pro support

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI能量值1万 | $0.99 | one-time |
| AI能量值5万 | $2.99 | one-time |
| AI能量值10万 | $5.99 | one-time |
| Three Months | $5.99 | one-time |
| Three Months Special Offer | $5.99 | one-time |
| One Year Special Offer | $9.99 | one-time |
| One Year Special Offer | $12.99 | one-time |
| One Year | $14.99 | one-time |
| Three Months Special Offer | $19.99 | one-time |
| Two Year Special Offer | $19.99 | one-time |
| Two Year Special Offer | $22.99 | one-time |
| Three Years | $24.99 | one-time |
| AI能量值50万 | $24.99 | one-time |
| Two Years | $29.99 | one-time |
| Lifetime Special Offer | $39.99 | one-time |
| Lifetime | $49.99 | one-time |
| Lifetime Special Offer | $49.99 | one-time |
| Honorable Member | $49.99 | one-time |
| Lifetime_Max | $49.99 | 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 MindTwigs free?

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

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

MindTwigs is rated higher. 结构大师HD averages 2.0 out of 5 from 1 ratings, while MindTwigs averages 4.9 from 10 ratings.

### Do 结构大师HD or MindTwigs have ads?

Neither 结构大师HD nor MindTwigs shows ads.

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

结构大师HD ships an update every 2 months, and MindTwigs every 3 weeks. Most recently, 结构大师HD was updated on June 24, 2026 and MindTwigs on September 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.*