# OiO client vs Yuan

The clearest difference is iOS requirement: Yuan at 13.0 against OiO client's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | OiO client | Yuan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 315 MB | 78 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [7 Hz Inc.](https://appshunter.io/developer/1588381704) | [HAOU TECHNOLOGY CO.,LTD](https://appshunter.io/developer/1762354730) |

## What reviewers say

### OiO client

[App page](https://appshunter.io/ios/app/oio-client/id6449966269)

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

**In-app purchases:** none


### Yuan

[App page](https://appshunter.io/ios/app/yuan-note/id6630370810)

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

**In-app purchases:** none


## Frequently asked questions

### Is OiO client free?

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

### Is Yuan free?

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

### Do OiO client or Yuan have ads?

Neither OiO client nor Yuan shows ads.

### Which is updated more often, OiO client or Yuan?

OiO client ships an update monthly, and Yuan monthly. Most recently, OiO client was updated on September 21, 2026 and Yuan on September 14, 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.*