# Z2Y Java Principles vs 超尘

The clearest difference is price: 超尘 at Free against Z2Y Java Principles's $1.99. 超尘 also leads on iOS requirement (13 vs 15.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

超尘 is free to download; Z2Y Java Principles costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Z2Y Java Principles ships an update every 5 days, 超尘 weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Z2Y Java Principles | 超尘 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Size | 257 MB | 190 MB |
| Requires iOS | 15.6 | **13** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [洁 欧阳](https://appshunter.io/developer/1715570257) | [北京超尘脱俗科技有限公司](https://appshunter.io/developer/1820837892) |

## What reviewers say

### Z2Y Java Principles

[App page](https://appshunter.io/ios/app/z2y-java-principles/id6504158005)

**Features:** Vision Pro support

**In-app purchases:** none


### 超尘

[App page](https://appshunter.io/ios/app/id6747326898)

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

**In-app purchases:** none


## Frequently asked questions

### Is Z2Y Java Principles free?

Z2Y Java Principles costs $1.99, with no in-app purchases.

### Is 超尘 free?

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

### Do Z2Y Java Principles or 超尘 have ads?

Neither Z2Y Java Principles nor 超尘 shows ads.

### Which is updated more often, Z2Y Java Principles or 超尘?

Z2Y Java Principles ships an update every 5 days, and 超尘 weekly. Most recently, Z2Y Java Principles was updated on November 4, 2026 and 超尘 on October 30, 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.*