# 齐昌地球 vs 八字

The clearest difference is in-app purchases: 八字 at none against 齐昌地球's 2. 齐昌地球's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 齐昌地球 sells 2 in-app purchases, starting at $29.99 per year. 八字 asks for nothing beyond the download.

齐昌地球 ships an update monthly, 八字 every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 齐昌地球 | 八字 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 114 MB | 13 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [文忠 谢](https://appshunter.io/developer/1669992445) | [帅 李](https://appshunter.io/developer/1705660101) |

## What reviewers say

### 齐昌地球

[App page](https://appshunter.io/ios/app/id1669992443)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 年会员 | $29.99 | per year |
| 至尊会员 | $99.99 | one-time |


### 八字

[App page](https://appshunter.io/ios/app/id6464371895)

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

**In-app purchases:** none


## Frequently asked questions

### Is 齐昌地球 free?

齐昌地球 is free to download, with in-app purchases available.

### Is 八字 free?

八字 is free to download, with no in-app purchases.

### Do 齐昌地球 or 八字 have ads?

Neither 齐昌地球 nor 八字 shows ads.

### Which is updated more often, 齐昌地球 or 八字?

齐昌地球 ships an update monthly, and 八字 every 3 weeks. Most recently, 齐昌地球 was updated on November 3, 2026 and 八字 on November 3, 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.*