# 知音楼 vs 秘塔AI搜索

The clearest difference is review sentiment: 秘塔AI搜索 at 59% against 知音楼's 0%. 秘塔AI搜索 also leads on rating (3.8 vs 1.5). 知音楼's advantage is in-app purchases (none vs 16). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 秘塔AI搜索 sells 13 one-off in-app purchases. 知音楼 asks for nothing beyond the download.

秘塔AI搜索 holds the better App Store score, 3.8 against 1.5. Both are backed by a comparable volume of ratings — 19 and 30 respectively. Written reviews point the same way: 0% of 知音楼's written reviews are positive against 59% of 秘塔AI搜索's.

知音楼 ships an update fortnightly, 秘塔AI搜索 every 10 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 知音楼 | 秘塔AI搜索 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (19 ratings)](https://appshunter.io/ios/app/id1465692937/reviews) | **[3.8 (30 ratings)](https://appshunter.io/ios/app/ai/id6478196963/reviews)** |
| Number of ratings | 19 | **30** |
| Positive reviews | 0.0% of reviews | **59.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 595 MB | 112 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [亿度慧达教育科技(北京)有限公司](https://appshunter.io/developer/564755477) | [上海秘塔网络科技有限公司](https://appshunter.io/developer/1540052473) |

## What reviewers say

### 知音楼

[App page](https://appshunter.io/ios/app/id1465692937)

A communication and collaboration platform designed for educational settings. It facilitates teamwork and communication within educational institutions.

**Highlights:** Team communication, Collaboration tools, Educational focus, Office platform

**Features:** Vision Pro support

**In-app purchases:** none


### 秘塔AI搜索

[App page](https://appshunter.io/ios/app/ai/id6478196963)

This AI-powered search engine offers a clean, ad-free interface for finding information across the web, documents, and academic papers. It provides structured answers with citations, generates outlines and tables, and supports exporting results in various formats.

**Highlights:** Ad-free, pure search interface, Structured answers with citations, Automatic outline and table generation, Export results to Word, PDF, Deep semantic search for documents, Academic search with structured information, Configurable academic databases

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 知识库额度1000点 | $0.99 | one-time |
| 1000 H3 积分 | $1.99 | one-time |
| 1000积分 | $1.99 | one-time |
| 知识库额度10000点 | $4.99 | one-time |
| 秘塔AI搜索月度会员 | $5.99 | one-time |
| 10000 H3 积分 | $14.99 | one-time |
| 10000积分 | $17.99 | one-time |
| 秘塔AI搜索年度会员 | $29.99 | one-time |
| 100000 H3 积分 | $129.99 | one-time |
| 100000积分 | $179.99 | one-time |
| 知识库额度1000000点 | $399.99 | one-time |
| 500000 H3 积分 | $599.99 | one-time |
| 500000积分 | $799.99 | one-time |


## Frequently asked questions

### Is 知音楼 free?

知音楼 is free to download, with no in-app purchases.

### Is 秘塔AI搜索 free?

秘塔AI搜索 is free to download, with in-app purchases available.

### Which has better reviews, 知音楼 or 秘塔AI搜索?

秘塔AI搜索 is rated higher. 知音楼 averages 1.5 out of 5 from 19 ratings, while 秘塔AI搜索 averages 3.8 from 30 ratings.

### Do 知音楼 or 秘塔AI搜索 have ads?

Neither 知音楼 nor 秘塔AI搜索 shows ads.

### Which is updated more often, 知音楼 or 秘塔AI搜索?

知音楼 ships an update fortnightly, and 秘塔AI搜索 every 10 days. Most recently, 知音楼 was updated on October 29, 2026 and 秘塔AI搜索 on October 30, 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.*