# 觅签 vs CAJ文献阅读器

The clearest difference is in-app purchases: 觅签 at none against CAJ文献阅读器's 3. 觅签 also leads on update cadence (every 2 weeks vs every 4 months) and iOS requirement (8 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. CAJ文献阅读器 sells 3 in-app purchases, starting at $2.99 per month. 觅签 asks for nothing beyond the download.

觅签 ships an update every 2 weeks, CAJ文献阅读器 every 4 months. The most recent releases landed on October 27, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 觅签 | CAJ文献阅读器 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 65.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | — | Freemium |
| Size | 30 MB | 53 MB |
| Requires iOS | **8** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zhongke Kangxin (Changzhou) Technology Co., Ltd.](https://appshunter.io/developer/1542311571) | [Meitian Trading](https://appshunter.io/developer/1549616114) |

## What reviewers say

### 觅签

[App page](https://appshunter.io/ios/app/id1542311569)

**In-app purchases:** none


### CAJ文献阅读器

[App page](https://appshunter.io/ios/app/caj/id1669879414)

This app allows you to easily read and convert CAJ, NH, and KDH document formats, commonly used for academic papers from Chinese academic databases. It supports converting these files to PDF or Word, with OCR capabilities for text extraction from scanned images. You can also import files from messaging apps and manage your reading history.

**Highlights:** Read CAJ, NH, KDH formats, Convert CAJ to PDF, Convert CAJ to Word, OCR text recognition, Import from messaging apps, Reading history management

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $2.99 | per month |
| 季会员 | $4.99 | per 3 months |
| 年会员 | $7.99 | per year |


## Frequently asked questions

### Is 觅签 free?

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

### Is CAJ文献阅读器 free?

CAJ文献阅读器 is free to download, with in-app purchases available.

### Do 觅签 or CAJ文献阅读器 have ads?

Neither 觅签 nor CAJ文献阅读器 shows ads.

### Which is updated more often, 觅签 or CAJ文献阅读器?

觅签 ships an update every 2 weeks, and CAJ文献阅读器 every 4 months. Most recently, 觅签 was updated on October 27, 2026 and CAJ文献阅读器 on October 21, 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.*