# Sketchalyze vs TopOpt 3D

The clearest difference is review sentiment: Sketchalyze at 60% against TopOpt 3D's 0%. Sketchalyze also leads on rating (5.0 vs 3.7). TopOpt 3D's advantage is update cadence (every 6 weeks vs every 13 months) and iOS requirement (11.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sketchalyze holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews point the same way: 60% of Sketchalyze's written reviews are positive against 0% of TopOpt 3D's.

Sketchalyze ships an update every 13 months, TopOpt 3D every 6 weeks. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Sketchalyze | TopOpt 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/sketchalyze/id704472004/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/topopt-3d/id881472301/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 15 MB | 103 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duy Truong](https://appshunter.io/developer/1257007296) | [DTU Mechanical Engineering](https://appshunter.io/developer/507453160) |

## What reviewers say

### Sketchalyze

[App page](https://appshunter.io/ios/app/sketchalyze/id704472004)

This app allows users to sketch and analyze structural systems directly on their iPad. It provides instant visualization of analysis results like deformations and section forces, performing finite element analysis in the background. Users can define cross-sections, apply loads, and visualize results for linear and nonlinear analyses.

**Highlights:** Sketch structural systems, Instant analysis results visualization, Finite element analysis, Tabulated and user-defined cross sections, Truss and beam element types, Linear and nonlinear analysis, Load-deflection curves

**Features:** macOS Compatibility

**In-app purchases:** none


### TopOpt 3D

[App page](https://appshunter.io/ios/app/topopt-3d/id881472301)

Perform 3D structural optimization using topology optimization on your iPad or iPhone. Adjust loads, supports, volume fractions, and grid sizes to observe design evolution. Experiment with different parameters to discover new minimums.

**Highlights:** 3D topology optimization, Adjustable loads and supports, Variable volume fractions, Experiment with grid sizes, Design evolution visualization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sketchalyze free?

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

### Is TopOpt 3D free?

TopOpt 3D is free to download, with no in-app purchases.

### Which has better reviews, Sketchalyze or TopOpt 3D?

Sketchalyze is rated higher. Sketchalyze averages 5.0 out of 5 from 7 ratings, while TopOpt 3D averages 3.7 from 3 ratings.

### Do Sketchalyze or TopOpt 3D have ads?

Neither Sketchalyze nor TopOpt 3D shows ads.

### Which is updated more often, Sketchalyze or TopOpt 3D?

Sketchalyze ships an update every 13 months, and TopOpt 3D every 6 weeks. Most recently, Sketchalyze was updated on October 17, 2026 and TopOpt 3D on October 4, 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.*