# OCS专家 vs R

The clearest difference is iOS requirement: OCS专家 at 9.0 against R's 12.0. 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.

OCS专家 ships an update every 3 weeks, R fortnightly. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | OCS专家 | R |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 7 MB | 48 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Hangzhou Reformer Holding Co., Ltd.](https://appshunter.io/developer/794153220) | [坚栋 王](https://appshunter.io/developer/1887912020) |

## What reviewers say

### OCS专家

[App page](https://appshunter.io/ios/app/ocs/id1476005795)

**Features:** macOS Compatibility

**In-app purchases:** none


### R

[App page](https://appshunter.io/ios/app/r-sight/id6755140912)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OCS专家 free?

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

### Is R free?

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

### Do OCS专家 or R have ads?

Neither OCS专家 nor R shows ads.

### Which is updated more often, OCS专家 or R?

OCS专家 ships an update every 3 weeks, and R fortnightly. Most recently, OCS专家 was updated on October 6, 2026 and R on October 2, 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.*