# sigmoid neuron vs Machine Learning Engineer Prep

The clearest difference is in-app purchases: sigmoid neuron at none against Machine Learning Engineer Prep's 1. Machine Learning Engineer Prep's advantage is iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Machine Learning Engineer Prep sells 1 one-off in-app purchase. sigmoid neuron asks for nothing beyond the download.

## The numbers

| Metric | sigmoid neuron | Machine Learning Engineer Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Size | 5 MB | 98 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### sigmoid neuron

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Machine Learning Engineer Prep

[App page](https://appshunter.io/ios/app/machine-learning-engineer-prep/id6785744238)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is sigmoid neuron free?

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

### Is Machine Learning Engineer Prep free?

Machine Learning Engineer Prep is free to download, with in-app purchases available.

### Do sigmoid neuron or Machine Learning Engineer Prep have ads?

Neither sigmoid neuron nor Machine Learning Engineer Prep 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.*