# Košík.sk vs OSTRIUM

The clearest difference is update cadence: OSTRIUM at weekly against Košík.sk's every 3 weeks. OSTRIUM also leads on iOS requirement (15.1 vs 18.0). 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.

Košík.sk ships an update every 3 weeks, OSTRIUM weekly. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Košík.sk | OSTRIUM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 84 MB | 51 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Kosik.cz s.r.o](https://appshunter.io/developer/1263819424) | [Appkaren s.r.o.](https://appshunter.io/developer/914363112) |

## What reviewers say

### Košík.sk

[App page](https://appshunter.io/ios/app/kosiksk/id6444678129)

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

**In-app purchases:** none


### OSTRIUM

[App page](https://appshunter.io/ios/app/ostrium/id6807676433)

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

**In-app purchases:** none


## Frequently asked questions

### Is Košík.sk free?

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

### Is OSTRIUM free?

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

### Do Košík.sk or OSTRIUM have ads?

Neither Košík.sk nor OSTRIUM shows ads.

### Which is updated more often, Košík.sk or OSTRIUM?

Košík.sk ships an update every 3 weeks, and OSTRIUM weekly. Most recently, Košík.sk was updated on November 3, 2026 and OSTRIUM on November 10, 2026.

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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.*