# 问易 Yi vs iDao

The clearest difference is price: 问易 Yi at Free against iDao's $0.99. iDao's advantage is in-app purchases (none vs 8). On ads, device support and iOS requirement there is nothing between them.

问易 Yi is free to download; iDao costs $0.99 up front. 问易 Yi sells 8 in-app purchases, starting at $5.99 per month. iDao asks for nothing beyond the download.

## The numbers

| Metric | 问易 Yi | iDao |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/yi/id6774650739/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | **Freemium** | Paid |
| Size | 105 MB | 18 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OneSource AI PTE. LTD.](https://appshunter.io/developer/1884215997) | [天从 何](https://appshunter.io/developer/914453386) |

## What reviewers say

### 问易 Yi

[App page](https://appshunter.io/ios/app/yi/id6774650739)

This app serves as a companion for studying the I Ching and a private journal for decision-making. It helps users clarify questions, reflect on situations, and review past decisions without predicting outcomes. It offers access to classic texts, commentary, and optional personal assessments.

**Highlights:** Study 64 hexagrams with source text and commentary, Private decision-reflection journaling, On-device AI assistance, Optional self-report personality assessments, End-to-end encrypted sync, Data export and deletion options, Multilingual study support

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yi Plus — Monthly | $5.99 | per month |
| Yi Master — Monthly | $12.99 | per month |
| Yi Plus — Yearly | $49.99 | per year |
| Yi Master — Yearly | $99.99 | per year |
| 30 Yi Credits | $0.99 | one-time |
| 10 Yi Credits | $0.99 | one-time |
| 120 Yi Credits | $2.99 | one-time |
| 360 Yi Credits | $6.99 | one-time |


### iDao

[App page](https://appshunter.io/ios/app/idao-tao-te-ching/id6796016006)

This offline companion facilitates a deep study of the Tao Te Ching with bilingual text, dual commentaries, and interactive practice tools. Engage in recitation, review games, and daily readings with customizable features and system integrations. Study data is kept private on your device by default.

**Highlights:** Bilingual reading and dual commentaries, Recitation workbench with highlighting, Study Hall and Seek the Tao practice games, Daily Chapter with widgets and notifications, Offline functionality, Customizable backgrounds and font sizes

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

**In-app purchases:** none


## Frequently asked questions

### Is 问易 Yi free?

问易 Yi is free to download, with in-app purchases available.

### Is iDao free?

iDao costs $0.99, with no in-app purchases.

### Do 问易 Yi or iDao have ads?

Neither 问易 Yi nor iDao shows ads.

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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.*