# 纯净万年历 vs I Ching Calendar

The clearest difference is in-app purchases: 纯净万年历 at none against I Ching Calendar's 3. 纯净万年历 also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. I Ching Calendar sells 3 in-app purchases, starting at $1.99 per 7 days. 纯净万年历 asks for nothing beyond the download.

纯净万年历 ships an update every 3 weeks, I Ching Calendar every 5 weeks. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 纯净万年历 | I Ching Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/i-ching-calendar/id6784172213/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 13 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [正刚 李](https://appshunter.io/developer/1861367336) | [帮兰 吴](https://appshunter.io/developer/1729036017) |

## What reviewers say

### 纯净万年历

[App page](https://appshunter.io/ios/app/id6756867357)

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

**In-app purchases:** none


### I Ching Calendar

[App page](https://appshunter.io/ios/app/i-ching-calendar/id6784172213)

This comprehensive folk custom app offers a perpetual calendar, auspicious date selection, numerology analysis, and health management tools. It integrates traditional Zhouyi culture with modern planning features for daily life and significant events.

**Highlights:** Perpetual calendar with Gregorian & lunar lookup, Auspicious date selector for events, Traditional numerology analysis (Eight-character, marriage matching), Eastern & Western divination (hexagrams, Tarot, horoscopes), Seasonal health manager with period tracker, Name numerology suite for baby naming and renaming

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional | $1.99 | per 7 days |
| Professional | $2.99 | per month |
| Professional | $19.99 | per year |


## Frequently asked questions

### Is 纯净万年历 free?

纯净万年历 is free to download, with no in-app purchases.

### Is I Ching Calendar free?

I Ching Calendar is free to download, with in-app purchases available.

### Do 纯净万年历 or I Ching Calendar have ads?

Neither 纯净万年历 nor I Ching Calendar shows ads.

### Which is updated more often, 纯净万年历 or I Ching Calendar?

纯净万年历 ships an update every 3 weeks, and I Ching Calendar every 5 weeks. Most recently, 纯净万年历 was updated on October 7, 2026 and I Ching Calendar on October 16, 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.*