# Mental Exercise vs Otto

The clearest difference is ads: Otto at none against Mental Exercise's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Mental Exercise | Otto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (19 ratings)](https://appshunter.io/ios/app/mental-exercise-solitaire/id6776508801/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Monetization | Ad-supported | — |
| Size | 191 MB | 442 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 9+ |
| Developer | [RAHMAN BIN ADEN](https://appshunter.io/developer/1177342882) | [volkeman](https://appshunter.io/developer/429893721) |

## What reviewers say

### Mental Exercise

[App page](https://appshunter.io/ios/app/mental-exercise-solitaire/id6776508801)

A classic card game offering endless levels and a zero-pressure experience for brain training and relaxation. Collect puzzle pieces by clearing games to unlock beautiful artwork. Features unlimited hints, undo, and a magic wand booster.

**Highlights:** Endless solitaire levels, Zero-pressure gameplay, Unlimited hints, Easy undo function, Magic Wand booster, Jigsaw puzzle collection, Unlockable artwork

**In-app purchases:** none


### Otto

[App page](https://appshunter.io/ios/app/otto-man/id6805119388)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mental Exercise free?

Mental Exercise is free to download, with no in-app purchases.

### Is Otto free?

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

### Do Mental Exercise or Otto have ads?

Mental Exercise shows ads; Otto does not.

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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.*