# 八字合化 vs 地質羅盤 2.0

The clearest difference is in-app purchases: 地質羅盤 2.0 at none against 八字合化's 1. 地質羅盤 2.0 also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. 八字合化 sells 1 one-off in-app purchase. 地質羅盤 2.0 asks for nothing beyond the download.

八字合化 ships an update every 3 months, 地質羅盤 2.0 every 9 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 八字合化 | 地質羅盤 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id1499070435/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 71 MB | 49 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chun wai Ho](https://appshunter.io/developer/642692620) | [Jet-Link Technologies Inc.](https://appshunter.io/developer/1154359182) |

## What reviewers say

### 八字合化

[App page](https://appshunter.io/ios/app/id1499070435)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 無限制 | $21.99 | one-time |


### 地質羅盤 2.0

[App page](https://appshunter.io/ios/app/20/id6443950944)

**In-app purchases:** none


## Frequently asked questions

### Is 八字合化 free?

八字合化 is free to download, with in-app purchases available.

### Is 地質羅盤 2.0 free?

地質羅盤 2.0 is free to download, with no in-app purchases.

### Do 八字合化 or 地質羅盤 2.0 have ads?

Neither 八字合化 nor 地質羅盤 2.0 shows ads.

### Which is updated more often, 八字合化 or 地質羅盤 2.0?

八字合化 ships an update every 3 months, and 地質羅盤 2.0 every 9 days. Most recently, 八字合化 was updated on November 3, 2026 and 地質羅盤 2.0 on November 7, 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.*