# StrucMaster vs mechanical design engine

The clearest difference is in-app purchases: mechanical design engine at none against StrucMaster's 1. mechanical design engine also leads on update cadence (every 2 months vs every 14 months). StrucMaster's advantage is iOS requirement (8.0 vs 13.0). On price, ads and device support there is nothing between them.

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

StrucMaster ships an update every 14 months, mechanical design engine every 2 months. The most recent releases landed on September 20, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | StrucMaster | mechanical design engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/strucmaster/id1095033470/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 101 MB | 63 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [颖达 陈](https://appshunter.io/developer/1058507663) | [gan dae choi](https://appshunter.io/developer/1574341439) |

## What reviewers say

### StrucMaster

[App page](https://appshunter.io/ios/app/strucmaster/id1095033470)

This app allows users to define and analyze structural mechanics problems. It offers powerful functions for internal force diagrams, dynamics, influence lines, and stability analysis, with detailed solving steps provided by artificial intelligence. Users can build 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, Non-integer element length support

**In-app purchases (1)**

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


### mechanical design engine

[App page](https://appshunter.io/ios/app/mechanical-design-engine/id1574341437)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StrucMaster free?

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

### Is mechanical design engine free?

mechanical design engine is free to download, with no in-app purchases.

### Do StrucMaster or mechanical design engine have ads?

Neither StrucMaster nor mechanical design engine shows ads.

### Which is updated more often, StrucMaster or mechanical design engine?

StrucMaster ships an update every 14 months, and mechanical design engine every 2 months. Most recently, StrucMaster was updated on September 20, 2026 and mechanical design engine on October 11, 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.*