# RAZ分级阅读 vs 蓝思树

The clearest difference is update cadence: RAZ分级阅读 at every 10 days against 蓝思树's monthly. RAZ分级阅读 also leads on iOS requirement (13.0 vs 15.6). 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.

RAZ分级阅读 ships an update every 10 days, 蓝思树 monthly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | RAZ分级阅读 | 蓝思树 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Size | 47 MB | 197 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [海笛 贾](https://appshunter.io/developer/1694721256) | [Hangzhou Langsi Future Technology Co.,Ltd](https://appshunter.io/developer/1782268997) |

## What reviewers say

### RAZ分级阅读

[App page](https://appshunter.io/ios/app/raz/id6743798568)

**Features:** macOS Compatibility

**In-app purchases:** none


### 蓝思树

[App page](https://appshunter.io/ios/app/id6756989258)

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

**In-app purchases:** none


## Frequently asked questions

### Is RAZ分级阅读 free?

RAZ分级阅读 is free to download, with no in-app purchases.

### Is 蓝思树 free?

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

### Do RAZ分级阅读 or 蓝思树 have ads?

Neither RAZ分级阅读 nor 蓝思树 shows ads.

### Which is updated more often, RAZ分级阅读 or 蓝思树?

RAZ分级阅读 ships an update every 10 days, and 蓝思树 monthly. Most recently, RAZ分级阅读 was updated on November 4, 2026 and 蓝思树 on November 5, 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.*