# 上上签 vs 秘塔AI搜索

The clearest difference is rating: 上上签 at 5.0 against 秘塔AI搜索's 3.8. 上上签 also leads on in-app purchases (none vs 16). 秘塔AI搜索's advantage is update cadence (every 10 days vs every 2 months) and ratings volume (30 vs 1). On price, ads, device support and iOS requirement there is nothing between them.

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

上上签 holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: 秘塔AI搜索 has 30 ratings behind it against 1, so its average is the more settled of the two.

上上签 ships an update every 2 months, 秘塔AI搜索 every 10 days. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 上上签 | 秘塔AI搜索 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id955123098/reviews)** | [3.8 (30 ratings)](https://appshunter.io/ios/app/ai/id6478196963/reviews) |
| Number of ratings | 1 | **30** |
| Positive reviews | — | 59.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 112 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [杭州尚尚签网络科技有限公司](https://appshunter.io/developer/955123097) | [上海秘塔网络科技有限公司](https://appshunter.io/developer/1540052473) |

## What reviewers say

### 上上签

[App page](https://appshunter.io/ios/app/id955123098)

**Features:** macOS Compatibility, 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 上上签 free?

上上签 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, 上上签 or 秘塔AI搜索?

上上签 is rated higher. 上上签 averages 5.0 out of 5 from 1 ratings, while 秘塔AI搜索 averages 3.8 from 30 ratings.

### Do 上上签 or 秘塔AI搜索 have ads?

Neither 上上签 nor 秘塔AI搜索 shows ads.

### Which is updated more often, 上上签 or 秘塔AI搜索?

上上签 ships an update every 2 months, and 秘塔AI搜索 every 10 days. Most recently, 上上签 was updated on October 23, 2026 and 秘塔AI搜索 on October 27, 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.*