# LockNLearn Kids vs Mental Models

The clearest difference is in-app purchases: LockNLearn Kids at none against Mental Models's 1. Mental Models's advantage is iOS requirement (15.1 vs 18.5). On price, ads and device support there is nothing between them.

Both are free to download. Mental Models sells 1 one-off in-app purchase. LockNLearn Kids asks for nothing beyond the download.

## The numbers

| Metric | LockNLearn Kids | Mental Models |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 19 MB | 53 MB |
| Requires iOS | 18.5 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pratham Sahasrabhoajane](https://appshunter.io/developer/1861541919) | [Christos Tsavas](https://appshunter.io/developer/1887557969) |

## What reviewers say

### LockNLearn Kids

[App page](https://appshunter.io/ios/app/locknlearn-kids/id6756583334)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is LockNLearn Kids free?

LockNLearn Kids is free to download, with no in-app purchases.

### Is Mental Models free?

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

### Do LockNLearn Kids or Mental Models have ads?

Neither LockNLearn Kids nor Mental Models 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.*