# StrucMaster HD vs WrenchBook

The clearest difference is in-app purchases: WrenchBook at none against StrucMaster HD's 1. WrenchBook also leads on update cadence (every 4 weeks vs every 6 months). StrucMaster HD's advantage is iOS requirement (8.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. StrucMaster HD sells 1 one-off in-app purchase. WrenchBook asks for nothing beyond the download.

StrucMaster HD ships an update every 6 months, WrenchBook every 4 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | StrucMaster HD | WrenchBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/strucmaster-hd/id1091326709/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 86 MB | 4 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [颖达 陈](https://appshunter.io/developer/1058507663) | [Leo Ohayon](https://appshunter.io/developer/1879160982) |

## What reviewers say

### StrucMaster HD

[App page](https://appshunter.io/ios/app/strucmaster-hd/id1091326709)

This app allows users to define and analyze structural mechanics problems on their iPad. It offers powerful functions for internal force diagrams, dynamics, influence lines, and stability analysis, with detailed solving steps provided by AI. Users can create complex structures with non-integer element lengths.

**Highlights:** Define custom structures, Internal force diagram analysis, Dynamics and stability analysis, Influence line calculations, AI-powered detailed solving steps, MultiSelect command for complex structures, Offline analysis

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Function Forever | $3.99 | one-time |


### WrenchBook

[App page](https://appshunter.io/ios/app/wrenchbook/id6759511152)

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

**In-app purchases:** none


## Frequently asked questions

### Is StrucMaster HD free?

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

### Is WrenchBook free?

WrenchBook is free to download, with no in-app purchases.

### Do StrucMaster HD or WrenchBook have ads?

Neither StrucMaster HD nor WrenchBook shows ads.

### Which is updated more often, StrucMaster HD or WrenchBook?

StrucMaster HD ships an update every 6 months, and WrenchBook every 4 weeks. Most recently, StrucMaster HD was updated on October 24, 2026 and WrenchBook on October 15, 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.*