# 绿晶服务 vs 德达OA办公

The clearest difference is iOS requirement: 绿晶服务 at 9.0 against 德达OA办公's 13.0. 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.

绿晶服务 ships an update every 10 days, 德达OA办公 weekly. The most recent releases landed on May 18, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | 绿晶服务 | 德达OA办公 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Size | 41 MB | 40 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Green Crystal Environmental Service Group Co., Ltd.](https://appshunter.io/developer/1474926448) | [北京云隼科技有限公司](https://appshunter.io/developer/1696059823) |

## What reviewers say

### 绿晶服务

[App page](https://appshunter.io/ios/app/id1474938537)

**Features:** macOS Compatibility

**In-app purchases:** none


### 德达OA办公

[App page](https://appshunter.io/ios/app/oa/id6450980888)

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

**In-app purchases:** none


## Frequently asked questions

### Is 绿晶服务 free?

绿晶服务 is free to download, with no in-app purchases.

### Is 德达OA办公 free?

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

### Do 绿晶服务 or 德达OA办公 have ads?

Neither 绿晶服务 nor 德达OA办公 shows ads.

### Which is updated more often, 绿晶服务 or 德达OA办公?

绿晶服务 ships an update every 10 days, and 德达OA办公 weekly. Most recently, 绿晶服务 was updated on May 18, 2026 and 德达OA办公 on September 11, 2026.

---

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