# CO2IN vs ČSH 2026

The clearest difference is ads: CO2IN at none against ČSH 2026'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 | CO2IN | ČSH 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 74 MB | 22 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [The CO2IN, a.s.](https://appshunter.io/developer/1580951797) | [Trilobite Technologies, s.r.o.](https://appshunter.io/developer/1106306899) |

## What reviewers say

### CO2IN

[App page](https://appshunter.io/ios/app/co2in/id1513533437)

**Features:** Vision Pro support

**In-app purchases:** none


### ČSH 2026

[App page](https://appshunter.io/ios/app/csh-2026/id6815129108)

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

**In-app purchases:** none


## Frequently asked questions

### Is CO2IN free?

CO2IN is free to download, with no in-app purchases.

### Is ČSH 2026 free?

ČSH 2026 is free to download, with no in-app purchases.

### Do CO2IN or ČSH 2026 have ads?

ČSH 2026 shows ads; CO2IN 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.*