# sigmoid neuron vs SnapPhysics

The clearest difference is in-app purchases: sigmoid neuron at none against SnapPhysics's 2. sigmoid neuron also leads on iOS requirement (17.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. SnapPhysics sells 2 in-app purchases, starting at $3.99 per 7 days. sigmoid neuron asks for nothing beyond the download.

## The numbers

| Metric | sigmoid neuron | SnapPhysics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 5 MB | 5 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Hugo Silva](https://appshunter.io/developer/1833256531) |

## What reviewers say

### sigmoid neuron

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

**Features:** macOS Compatibility

**In-app purchases:** none


### SnapPhysics

[App page](https://appshunter.io/ios/app/snapphysics-physics-ai/id6759679503)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SnapPhysics: Weekly Premium Access | $3.99 | per 7 days |
| SnapPhysics: Yearly Premium Access | $29.99 | per year |


## Frequently asked questions

### Is sigmoid neuron free?

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

### Is SnapPhysics free?

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

### Do sigmoid neuron or SnapPhysics have ads?

Neither sigmoid neuron nor SnapPhysics 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.*