# Touch Fluids vs sigmoid neuron

The clearest difference is price: sigmoid neuron at Free against Touch Fluids's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

sigmoid neuron is free to download; Touch Fluids costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Touch Fluids | sigmoid neuron |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/touch-fluids/id427420343/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | — |
| Monetization | Paid | — |
| Size | 15 MB | 5 MB |
| Requires iOS | **17.2** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Daxhelet](https://appshunter.io/developer/339056993) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Touch Fluids

[App page](https://appshunter.io/ios/app/touch-fluids/id427420343)

An educational tool for fluid mechanics courses, featuring basic equations and animations. It covers topics from fluid statics to flow in pipes, suitable for high school and university students. Teachers can use it to present concepts in class.

**Highlights:** Basic fluid mechanics equations, Illustrative animations, Fluid statics, Fluid in motion, Continuity and energy equations, Flow in pipes, Vector operations

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

**In-app purchases:** none


### sigmoid neuron

[App page](https://appshunter.io/ios/app/sigmoid-neuron/id6740157799)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Touch Fluids free?

Touch Fluids costs $0.99, with no in-app purchases.

### Is sigmoid neuron free?

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

### Do Touch Fluids or sigmoid neuron have ads?

Neither Touch Fluids nor sigmoid neuron shows ads.

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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.*