# 易经导航 vs 呼吸河豚

The clearest difference is update cadence: 易经导航 at every 5 weeks against 呼吸河豚's every 3 months. 呼吸河豚's advantage is price ($0.99 vs $1.99) and iOS requirement (12.0 vs 15.6). On review sentiment, ads, in-app purchases and device support there is nothing between them.

易经导航 costs $1.99 and 呼吸河豚 $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

易经导航 ships an update every 5 weeks, 呼吸河豚 every 3 months. The most recent releases landed on November 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 易经导航 | 呼吸河豚 |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/iching-navigator/id493207167/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 71.4% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Paid | — |
| Size | 7 MB | 30 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lingchen](https://appshunter.io/developer/490063568) | [Mental Healthcare Ltd.](https://appshunter.io/developer/1606295519) |

## 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


### 呼吸河豚

[App page](https://appshunter.io/ios/app/id1548244902)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 易经导航 free?

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

### Is 呼吸河豚 free?

呼吸河豚 costs $0.99, with no in-app purchases.

### Do 易经导航 or 呼吸河豚 have ads?

Neither 易经导航 nor 呼吸河豚 shows ads.

### Which is updated more often, 易经导航 or 呼吸河豚?

易经导航 ships an update every 5 weeks, and 呼吸河豚 every 3 months. Most recently, 易经导航 was updated on November 1, 2026 and 呼吸河豚 on October 16, 2026.

---

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