# O vs Kopo

The clearest difference is ads: O at none against Kopo's shown. O also leads on iOS requirement (12.0 vs 15.1). On price, 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 | O | Kopo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | — |
| Size | 40 MB | 30 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HUTCHINSON](https://appshunter.io/developer/862345826) | [Denis MIRONOV194147067381](https://appshunter.io/developer/6776662463) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-ring/id1229032846)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kopo

[App page](https://appshunter.io/ios/app/kopo/id6776662461)

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

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is Kopo free?

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

### Do O or Kopo have ads?

Kopo shows ads; O 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.*