# 银豹美业 vs RetainBook

The clearest difference is price: 银豹美业 at Free against RetainBook's $2.99. RetainBook's advantage is update cadence (every 6 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

银豹美业 is free to download; RetainBook costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

银豹美业 ships an update every 4 months, RetainBook every 6 weeks. The most recent releases landed on October 3, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 银豹美业 | RetainBook |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Size | 15 MB | 19 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Zhundong Network Technologies (Xiamen) Co., Ltd.](https://appshunter.io/developer/1766227469) | [久燕 王](https://appshunter.io/developer/1896551289) |

## What reviewers say

### 银豹美业

[App page](https://appshunter.io/ios/app/id6449487154)

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

**In-app purchases:** none


### RetainBook

[App page](https://appshunter.io/ios/app/retainbook/id6769669764)

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

**In-app purchases:** none


## Frequently asked questions

### Is 银豹美业 free?

银豹美业 is free to download, with no in-app purchases.

### Is RetainBook free?

RetainBook costs $2.99, with no in-app purchases.

### Do 银豹美业 or RetainBook have ads?

Neither 银豹美业 nor RetainBook shows ads.

### Which is updated more often, 银豹美业 or RetainBook?

银豹美业 ships an update every 4 months, and RetainBook every 6 weeks. Most recently, 银豹美业 was updated on October 3, 2026 and RetainBook on October 16, 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.*