# TopOpt vs Dsod Erasmus

The clearest difference is device support: TopOpt at 3 against Dsod Erasmus's —. TopOpt also leads on iOS requirement (11.0 vs 13.0). On price 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.

## The numbers

| Metric | TopOpt | Dsod Erasmus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/topopt/id507454646/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 100 MB | 29 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [DTU Mechanical Engineering](https://appshunter.io/developer/507453160) | [GIRIFT EGITIM TEKNOLOJILERI YAZILIM VE DANISMANLIK SANAYI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1600280720) |

## What reviewers say

### TopOpt

[App page](https://appshunter.io/ios/app/topopt/id507454646)

This app allows users to perform structural optimization using topology optimization methods on their iPad or iPhone. Users can manipulate loads and supports to observe design evolution and experiment with various parameters like volume fractions and grid sizes.

**Highlights:** Topology optimization method, Structural design evolution, Load and support manipulation, Volume fraction experimentation, Grid size adjustments

**Features:** macOS Compatibility

**In-app purchases:** none


### Dsod Erasmus

[App page](https://appshunter.io/ios/app/dsod-erasmus/id6450459001)

**In-app purchases:** none


## Frequently asked questions

### Is TopOpt free?

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

### Is Dsod Erasmus free?

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

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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.*