# TopOpt 3D vs Binary Float Converter

The clearest difference is price: TopOpt 3D at Free against Binary Float Converter's $1.99. TopOpt 3D also leads on update cadence (every 6 weeks vs every 5 months) and iOS requirement (11.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

TopOpt 3D is free to download; Binary Float Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TopOpt 3D ships an update every 6 weeks, Binary Float Converter every 5 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | TopOpt 3D | Binary Float Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/topopt-3d/id881472301/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free | — |
| Size | 103 MB | 1 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DTU Mechanical Engineering](https://appshunter.io/developer/507453160) | [Roman Volinsky](https://appshunter.io/developer/977951850) |

## What reviewers say

### 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


### Binary Float Converter

[App page](https://appshunter.io/ios/app/binary-float-converter/id1552462597)

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

**In-app purchases:** none


## Frequently asked questions

### Is TopOpt 3D free?

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

### Is Binary Float Converter free?

Binary Float Converter costs $1.99, with no in-app purchases.

### Do TopOpt 3D or Binary Float Converter have ads?

Neither TopOpt 3D nor Binary Float Converter shows ads.

### Which is updated more often, TopOpt 3D or Binary Float Converter?

TopOpt 3D ships an update every 6 weeks, and Binary Float Converter every 5 months. Most recently, TopOpt 3D was updated on October 4, 2026 and Binary Float Converter on October 2, 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.*