# ooin vs Discussion CZ

The clearest difference is in-app purchases: Discussion CZ at none against ooin's 2. Discussion CZ also leads on update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ooin sells 2 in-app purchases, starting at $3.99 per month. Discussion CZ asks for nothing beyond the download.

ooin ships an update fortnightly, Discussion CZ every 2 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | ooin | Discussion CZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 32 MB | 147 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [heyvia](https://appshunter.io/developer/1894993366) | [Michal Trnka](https://appshunter.io/developer/6784703471) |

## What reviewers say

### ooin

[App page](https://appshunter.io/ios/app/ooin/id6762748155)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ooin Premium Monthly | $3.99 | per month |
| ooin Premium Yearly | $34.99 | per year |


### Discussion CZ

[App page](https://appshunter.io/ios/app/discussion-cz/id6784703469)

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

**In-app purchases:** none


## Frequently asked questions

### Is ooin free?

ooin is free to download, with in-app purchases available.

### Is Discussion CZ free?

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

### Do ooin or Discussion CZ have ads?

Neither ooin nor Discussion CZ shows ads.

### Which is updated more often, ooin or Discussion CZ?

ooin ships an update fortnightly, and Discussion CZ every 2 days. Most recently, ooin was updated on October 28, 2026 and Discussion CZ on October 28, 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.*