# 准吖 vs YiYu

The clearest difference is price: 准吖 at Free against YiYu's $1.99. YiYu's advantage is in-app purchases (none vs 10) and update cadence (every 4 days vs monthly). On ads, device support and iOS requirement there is nothing between them.

准吖 is free to download; YiYu costs $1.99 up front. 准吖 sells 10 one-off in-app purchases. YiYu asks for nothing beyond the download.

准吖 ships an update monthly, YiYu every 4 days. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 准吖 | YiYu |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/yiyu/id6786750267/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 169 MB | 15 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [深圳市康可欣信息科技有限公司](https://appshunter.io/developer/1456221008) | [文鑫 刘](https://appshunter.io/developer/6786380400) |

## What reviewers say

### 准吖

[App page](https://appshunter.io/ios/app/ai/id1456221009)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 55准币充值 | $0.99 | one-time |
| 220准币充值 | $4.99 | one-time |
| 590准币充值 | $11.99 | one-time |
| 722准币充值 | $14.99 | one-time |
| 1169准币充值 | $24.99 | one-time |
| 1499准币充值 | $29.99 | one-time |
| 2056准币充值 | $39.99 | one-time |
| 3225准币充值 | $69.99 | one-time |
| 5556准币充值 | $119.99 | one-time |
| 9613准币充值 | $199.99 | one-time |


### YiYu

[App page](https://appshunter.io/ios/app/yiyu/id6786750267)

Explore Eastern Daoist culture and gain insights for self-observation and trend prediction. Create personal profiles, record observations, and learn traditional concepts. Use tools for analysis and reflection, not definitive judgments.

**Highlights:** Personal profile creation, Observation journaling, Traditional culture learning, Astrology and divination tools, AI-powered dialogue and analysis, Trend prediction assistance

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

**In-app purchases:** none


## Frequently asked questions

### Is 准吖 free?

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

### Is YiYu free?

YiYu costs $1.99, with no in-app purchases.

### Do 准吖 or YiYu have ads?

Neither 准吖 nor YiYu shows ads.

### Which is updated more often, 准吖 or YiYu?

准吖 ships an update monthly, and YiYu every 4 days. Most recently, 准吖 was updated on October 7, 2026 and YiYu 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.*