# Z2Y Java Principles vs 灵光

The clearest difference is price: 灵光 at Free against Z2Y Java Principles's $1.99. Z2Y Java Principles's advantage is device support (4 vs 2). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

灵光 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, 灵光 every 9 days. The most recent releases landed on September 9, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Z2Y Java Principles | 灵光 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[3.9 (76 ratings)](https://appshunter.io/ios/app/ai/id6751496092/reviews)** |
| Number of ratings | — | **76** |
| Positive reviews | — | 77.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | — | Free |
| Size | 257 MB | 271 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [洁 欧阳](https://appshunter.io/developer/1715570257) | [Alipay (Hangzhou) Technology Co., Ltd.](https://appshunter.io/developer/333206292) |

## 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


### 灵光

[App page](https://appshunter.io/ios/app/ai/id6751496092)

This AI assistant integrates language, image, voice, and data understanding to generate multimodal outputs like 3D models, audio, charts, and animations. It offers features for quick app generation, interactive learning, and intelligent visual exploration, making complex information simple.

**Highlights:** Generate interactive apps in 30 seconds, Visualize complex knowledge with 3D models, illustrations, and animations, Understand and generate images and videos, Real-time scene understanding and visual Q&A, Interactive maps for planning and exploration, Summarize financial reports and documents

**Features:** macOS Compatibility, Apple Wallet, 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 灵光 free?

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

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

Neither Z2Y Java Principles nor 灵光 shows ads.

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

Z2Y Java Principles ships an update every 5 days, and 灵光 every 9 days. Most recently, Z2Y Java Principles was updated on September 9, 2026 and 灵光 on September 26, 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.*