# i IChing vs 古文典籍大全

The clearest difference is iOS requirement: 古文典籍大全 at 12.0 against i IChing's 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. i IChing sells 1 one-off in-app purchase and 古文典籍大全 sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

i IChing ships an update every 2 weeks, 古文典籍大全 every 3 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | i IChing | 古文典籍大全 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | — |
| Size | 99 MB | 28 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [QOOQ inc.](https://appshunter.io/developer/446639722) | [Hefei Chengchuang Information Technology Co., Ltd.](https://appshunter.io/developer/1692459474) |

## What reviewers say

### i IChing

[App page](https://appshunter.io/ios/app/i-iching/id1515102228)

This app offers authentic I Ching divination using a faithful digital recreation of the traditional yarrow stalk method. It provides over 250,000 characters of content, including original texts and Wilhelm commentary, to guide important life decisions.

**Highlights:** Authentic yarrow stalk divination, 250,000+ characters of content, Complete Wilhelm commentary, Ad-free divination experience, Browse all 64 hexagrams, Automatic reading history

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $7.99 | one-time |


### 古文典籍大全

[App page](https://appshunter.io/ios/app/id6450243883)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员月卡 | $0.99 | one-time |
| 会员季卡 | $1.99 | one-time |
| 年会员 | $6.99 | one-time |
| 3年会员 | $19.99 | one-time |
| 永久会员 | $29.99 | one-time |


## Frequently asked questions

### Is i IChing free?

i IChing is free to download, with in-app purchases available.

### Is 古文典籍大全 free?

古文典籍大全 is free to download, with in-app purchases available.

### Do i IChing or 古文典籍大全 have ads?

Neither i IChing nor 古文典籍大全 shows ads.

### Which is updated more often, i IChing or 古文典籍大全?

i IChing ships an update every 2 weeks, and 古文典籍大全 every 3 weeks. Most recently, i IChing was updated on October 27, 2026 and 古文典籍大全 on October 25, 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.*