# 建查云 vs Jade Codex

The clearest difference is in-app purchases: 建查云 at none against Jade Codex's 2. 建查云 also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Jade Codex sells 2 in-app purchases, starting at $4.99 per month. 建查云 asks for nothing beyond the download.

建查云 ships an update every 4 days, Jade Codex fortnightly. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 建查云 | Jade Codex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/jade-codex-chinese-almanac/id6762005406/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 75 MB | 39 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [新文 陈](https://appshunter.io/developer/1618899755) | [Yi Yin](https://appshunter.io/developer/1891232425) |

## What reviewers say

### 建查云

[App page](https://appshunter.io/ios/app/id6450256295)

**Features:** macOS Compatibility

**In-app purchases:** none


### Jade Codex

[App page](https://appshunter.io/ios/app/jade-codex-chinese-almanac/id6762005406)

Explore ancient wisdom and gain personal insights through a digital I Ching oracle. Cast hexagrams, interpret dreams with AI, and understand your birth hexagram. All readings are processed on-device for maximum privacy.

**Highlights:** Traditional three-coin casting method, AI-powered hexagram interpretations, Zhou Gong dream interpretation with 500+ symbols, Birth hexagram and lunar calendar insights, Fully annotated 64 hexagrams, Journaling for readings and dreams, On-device AI for privacy

**Features:** macOS Compatibility, iMessage stickers, Fun Camera support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is 建查云 free?

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

### Is Jade Codex free?

Jade Codex is free to download, with in-app purchases available.

### Do 建查云 or Jade Codex have ads?

Neither 建查云 nor Jade Codex shows ads.

### Which is updated more often, 建查云 or Jade Codex?

建查云 ships an update every 4 days, and Jade Codex fortnightly. Most recently, 建查云 was updated on October 11, 2026 and Jade Codex on October 15, 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.*