# Mental Models vs 11+ Selective Thinking Skills

The clearest difference is iOS requirement: 11+ Selective Thinking Skills at 13.0 against Mental Models's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mental Models sells 1 one-off in-app purchase and 11+ Selective Thinking Skills sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Mental Models | 11+ Selective Thinking Skills |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 53 MB | 26 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christos Tsavas](https://appshunter.io/developer/1887557969) | [fly sky pty ltd](https://appshunter.io/developer/1838696534) |

## What reviewers say

### Mental Models

[App page](https://appshunter.io/ios/app/mental-models-mind-models/id6761058477)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $6.99 | one-time |


### 11+ Selective Thinking Skills

[App page](https://appshunter.io/ios/app/11-plus-selective-thinking-skills/id6776193330)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thinking Skills Pro | $4.99 | per month |
| Thinking Skills Full Access | $6.99 | per 7 days |
| Thinking Skills Pro | $14.99 | per year |
| Thinking Skills Full Access | $79.99 | one-time |


## Frequently asked questions

### Is Mental Models free?

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

### Is 11+ Selective Thinking Skills free?

11+ Selective Thinking Skills is free to download, with in-app purchases available.

### Do Mental Models or 11+ Selective Thinking Skills have ads?

Neither Mental Models nor 11+ Selective Thinking Skills 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.*