# 紫微通書 vs 八字

The clearest difference is in-app purchases: 八字 at none against 紫微通書's 5. 紫微通書's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 紫微通書 sells 5 one-off in-app purchases. 八字 asks for nothing beyond the download.

紫微通書 ships an update every 4 weeks, 八字 every 3 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | 紫微通書 | 八字 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/id6443444483/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Size | 128 MB | 13 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 17+ |
| Developer | [Shenzhen Tianxun Culture Technology Co.,Ltd.](https://appshunter.io/developer/1643867629) | [帅 李](https://appshunter.io/developer/1705660101) |

## What reviewers say

### 紫微通書

[App page](https://appshunter.io/ios/app/id6443444483)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A项购买 | $6.99 | one-time |
| B项购买 | $19.99 | one-time |
| C项购买 | $29.99 | one-time |
| D项购买 | $59.99 | one-time |
| VIP购买 | $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 紫微通書 free?

紫微通書 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 紫微通書 or 八字 have ads?

Neither 紫微通書 nor 八字 shows ads.

### Which is updated more often, 紫微通書 or 八字?

紫微通書 ships an update every 4 weeks, and 八字 every 3 weeks. Most recently, 紫微通書 was updated on October 30, 2026 and 八字 on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*