# CSO vs Sej og Stærk

The clearest difference is update cadence: Sej og Stærk at weekly against CSO's every 5 months. 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.

CSO ships an update every 5 months, Sej og Stærk weekly. The most recent releases landed on September 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CSO | Sej og Stærk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Size | 21 MB | 66 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IntraMed A/S](https://appshunter.io/developer/1437785882) | [Booking Board](https://appshunter.io/developer/1698899191) |

## What reviewers say

### CSO

[App page](https://appshunter.io/ios/app/cso/id1437785883)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sej og Stærk

[App page](https://appshunter.io/ios/app/sej-og-strk/id6452399987)

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

**In-app purchases:** none


## Frequently asked questions

### Is CSO free?

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

### Is Sej og Stærk free?

Sej og Stærk is free to download, with no in-app purchases.

### Do CSO or Sej og Stærk have ads?

Neither CSO nor Sej og Stærk shows ads.

### Which is updated more often, CSO or Sej og Stærk?

CSO ships an update every 5 months, and Sej og Stærk weekly. Most recently, CSO was updated on September 29, 2026 and Sej og Stærk on October 24, 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.*