# 고전 사주 vs I Ching

The clearest difference is in-app purchases: I Ching at none against 고전 사주's 6. I Ching also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). 고전 사주's advantage is device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. 고전 사주 sells 6 one-off in-app purchases. I Ching asks for nothing beyond the download.

고전 사주 ships an update every 2 months, I Ching every 3 weeks. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 고전 사주 | I Ching |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/3/id1205284196/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 66 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jongsoo Choi](https://appshunter.io/developer/1135330177) | [Trinity Apps LLC](https://appshunter.io/developer/1760667386) |

## What reviewers say

### 고전 사주

[App page](https://appshunter.io/ios/app/3/id1205284196)

Explore the wisdom of ancient East Asian astrology with this app. It provides the original texts and modern interpretations of three major classical texts, helping you understand your destiny through birth dates. Ideal for those seeking a deeper understanding of traditional fortune-telling.

**Highlights:** Original texts of 3 major classical astrology books, Modern language translation and explanations, Fortune-telling based on birth date, Index of classical texts by day and month, Easy-to-understand commentary for beginners

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 토큰 1개 구매 | $2.99 | one-time |
| 리포트 구매 | $3.99 | one-time |
| 무광고버전 업그레이드 | $3.99 | one-time |
| 토큰 3개 구매 | $6.99 | one-time |
| 토큰 5개 구매 | $9.99 | one-time |
| 토큰 10개 구매 | $16.99 | one-time |


### I Ching

[App page](https://appshunter.io/ios/app/i-ching-ai-oracle/id6802163438)

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

**In-app purchases:** none


## Frequently asked questions

### Is 고전 사주 free?

고전 사주 is free to download, with in-app purchases available.

### Is I Ching free?

I Ching is free to download, with no in-app purchases.

### Do 고전 사주 or I Ching have ads?

고전 사주 shows ads; I Ching does not.

### Which is updated more often, 고전 사주 or I Ching?

고전 사주 ships an update every 2 months, and I Ching every 3 weeks. Most recently, 고전 사주 was updated on October 15, 2026 and I Ching on October 24, 2026.

---

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