# 易通OA vs 红圈云

The clearest difference is update cadence: 红圈云 at every 2 weeks against 易通OA's every 8 months. 易通OA's advantage is iOS requirement (12.0 vs 15.1). On price, ads, 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.

易通OA ships an update every 8 months, 红圈云 every 2 weeks. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 易通OA | 红圈云 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Size | 21 MB | 146 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [文武 黄](https://appshunter.io/developer/1511359204) | [Hecom (Beijing) Technology Co., Ltd.](https://appshunter.io/developer/870414888) |

## What reviewers say

### 易通OA

[App page](https://appshunter.io/ios/app/oa/id1522421197)

**Features:** macOS Compatibility

**In-app purchases:** none


### 红圈云

[App page](https://appshunter.io/ios/app/id6447954959)

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

**In-app purchases:** none


## Frequently asked questions

### Is 易通OA free?

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

### Is 红圈云 free?

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

### Do 易通OA or 红圈云 have ads?

Neither 易通OA nor 红圈云 shows ads.

### Which is updated more often, 易通OA or 红圈云?

易通OA ships an update every 8 months, and 红圈云 every 2 weeks. Most recently, 易通OA was updated on September 15, 2026 and 红圈云 on September 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*