# 工部商书 vs EchoEgg

The clearest difference is iOS requirement: 工部商书 at 12.0 against EchoEgg's 16.0. 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.

工部商书 ships an update fortnightly, EchoEgg every 2 weeks. The most recent releases landed on September 14, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 工部商书 | EchoEgg |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 112 MB | 120 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [江苏蒙东软件开发有限公司](https://appshunter.io/developer/1690325798) | [Lianou Technology (Haining) Co., Ltd](https://appshunter.io/developer/1775370202) |

## What reviewers say

### 工部商书

[App page](https://appshunter.io/ios/app/id6449733237)

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

**In-app purchases:** none


### EchoEgg

[App page](https://appshunter.io/ios/app/echoegg/id6741832546)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 工部商书 free?

工部商书 is free to download, with no in-app purchases.

### Is EchoEgg free?

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

### Do 工部商书 or EchoEgg have ads?

Neither 工部商书 nor EchoEgg shows ads.

### Which is updated more often, 工部商书 or EchoEgg?

工部商书 ships an update fortnightly, and EchoEgg every 2 weeks. Most recently, 工部商书 was updated on September 14, 2026 and EchoEgg on September 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.*