# ooin vs mono

The clearest difference is in-app purchases: mono at none against ooin's 2. mono also leads on device support (3 vs 1). ooin's advantage is iOS requirement (16.6 vs 26.2). On price, update cadence and ads there is nothing between them.

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

ooin ships an update every 2 weeks, mono weekly. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ooin | mono |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 32 MB | 18 MB |
| Requires iOS | **16.6** | 26.2 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [heyvia](https://appshunter.io/developer/1894993366) | [Steve Urrego](https://appshunter.io/developer/1422175751) |

## 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 |


### mono

[App page](https://appshunter.io/ios/app/mono-private-messenger/id6770101349)

**In-app purchases:** none


## Frequently asked questions

### Is ooin free?

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

### Is mono free?

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

### Do ooin or mono have ads?

Neither ooin nor mono shows ads.

### Which is updated more often, ooin or mono?

ooin ships an update every 2 weeks, and mono weekly. Most recently, ooin was updated on October 31, 2026 and mono 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.*