# CAJ阅读器 vs Noting Pro

CAJ阅读器 and Noting Pro both sit at 4.6 stars, but that hides the real split: 75% of Noting Pro's written reviews are positive against 0% of CAJ阅读器's. Noting Pro also leads on update cadence (every 3 days vs every 11 days). CAJ阅读器's advantage is iOS requirement (11.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. CAJ阅读器 sells 3 in-app purchases, starting at $2.99 per month and Noting Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CAJ阅读器 holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews complicate that: 0% of CAJ阅读器's written reviews are positive against 75% of Noting Pro's, so the app with the better star average is not the one people write more warmly about.

CAJ阅读器 ships an update every 11 days, Noting Pro every 3 days. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | CAJ阅读器 | Noting Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/caj-caj/id6447676025/reviews)** | [4.4 (8 ratings)](https://appshunter.io/ios/app/noting-pro/id6458345951/reviews) |
| Number of ratings | **10** | 8 |
| Positive reviews | 0.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 3 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 45 MB | 116 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Light Speed Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1670291399) | [裕坤 张](https://appshunter.io/developer/1268526648) |

## What reviewers say

### CAJ阅读器

[App page](https://appshunter.io/ios/app/caj-caj/id6447676025)

This app is a professional reader for CAJ documents, supporting academic papers, journals, and magazines. It also offers conversion tools to transform CAJ files into Word or PDF, and handles various PDF format conversions with other office documents.

**Highlights:** CAJ document viewing, CAJ to Word conversion, CAJ to PDF conversion, PDF to Office file conversion, Supports academic papers and journals

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $2.99 | per month |
| 年会员 | $12.99 | per year |
| 永久会员 | $14.99 | one-time |


### Noting Pro

[App page](https://appshunter.io/ios/app/noting-pro/id6458345951)

Create stunning vector notes with gradient ink and pressure-sensitive tools. Features include shape recognition, layers, PDF annotation, and iCloud sync. Unlock all features with a one-time purchase.

**Highlights:** Vector gradient ink strokes, Pressure-sensitive pens and erasers, Shape recognition and editing, Layer system for organization, PDF annotation with editable gradients, iCloud sync across devices, Smart laser pointer with lasso selection

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Noting Pro专业版 - 永久解锁 | $1.99 | one-time |


## Frequently asked questions

### Is CAJ阅读器 free?

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

### Is Noting Pro free?

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

### Which has better reviews, CAJ阅读器 or Noting Pro?

CAJ阅读器 is rated higher. CAJ阅读器 averages 4.6 out of 5 from 10 ratings, while Noting Pro averages 4.4 from 8 ratings.

### Do CAJ阅读器 or Noting Pro have ads?

Neither CAJ阅读器 nor Noting Pro shows ads.

### Which is updated more often, CAJ阅读器 or Noting Pro?

CAJ阅读器 ships an update every 11 days, and Noting Pro every 3 days. Most recently, CAJ阅读器 was updated on September 18, 2026 and Noting Pro on September 13, 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.*