# 易经导航 vs Slow Ink Clock

The clearest difference is price: Slow Ink Clock at Free against 易经导航's $1.99. Slow Ink Clock also leads on update cadence (every 9 days vs every 5 weeks). 易经导航's advantage is in-app purchases (none vs 4) and iOS requirement (15.6 vs 17.0). On ads and device support there is nothing between them.

Slow Ink Clock is free to download; 易经导航 costs $1.99 up front. Slow Ink Clock sells 4 in-app purchases, starting at $0.99 per month. 易经导航 asks for nothing beyond the download.

易经导航 ships an update every 5 weeks, Slow Ink Clock every 9 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 易经导航 | Slow Ink Clock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/iching-navigator/id493207167/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 9 days** |
| Monetization | Paid | — |
| Size | 7 MB | 376 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lingchen](https://appshunter.io/developer/490063568) | [Andrew Li](https://appshunter.io/developer/1886938485) |

## What reviewers say

### 易经导航

[App page](https://appshunter.io/ios/app/iching-navigator/id493207167)

This app helps users learn and understand the I Ching through interactive practice. It offers guidance for life decisions by interpreting卦象, 卦辞, and 爻辞, and includes the "Jiao Shi I Ching" for deeper study.

**Highlights:** Learn I Ching principles, Interpret卦象, 卦辞, 爻辞, Guidance for life decisions, Includes Jiao Shi I Ching, Interactive learning

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

**In-app purchases:** none


### Slow Ink Clock

[App page](https://appshunter.io/ios/app/slow-ink-clock/id6772479285)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ink Weather Monthly | $0.99 | per month |
| Ink Weather Yearly | $5.99 | per year |
| Slow Ink Clock Font Pack | $0.99 | one-time |
| Slow Ink Clock Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is 易经导航 free?

易经导航 costs $1.99, with no in-app purchases.

### Is Slow Ink Clock free?

Slow Ink Clock is free to download, with in-app purchases available.

### Do 易经导航 or Slow Ink Clock have ads?

Neither 易经导航 nor Slow Ink Clock shows ads.

### Which is updated more often, 易经导航 or Slow Ink Clock?

易经导航 ships an update every 5 weeks, and Slow Ink Clock every 9 days. Most recently, 易经导航 was updated on October 26, 2026 and Slow Ink Clock 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.*