# Optima Košice vs BellyButton

The clearest difference is iOS requirement: BellyButton at 13.0 against Optima Košice's 15.1. On price, ads, in-app purchases and device support 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 | Optima Košice | BellyButton |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 57 MB | 28 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Simplaq](https://appshunter.io/developer/1573711946) | [CherryPeak s.r.o.](https://appshunter.io/developer/954892585) |

## What reviewers say

### Optima Košice

[App page](https://appshunter.io/ios/app/optima-kosice/id6747384966)

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

**In-app purchases:** none


### BellyButton

[App page](https://appshunter.io/ios/app/bellybutton/id6752956004)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optima Košice free?

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

### Is BellyButton free?

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

### Do Optima Košice or BellyButton have ads?

Neither Optima Košice nor BellyButton 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.*