# CAJ阅读器 vs EchoNote 回声笔记

The clearest difference is rating: EchoNote 回声笔记 at 5.0 against CAJ阅读器's 4.6. CAJ阅读器's advantage is ratings volume (10 vs 1) and iOS requirement (11.0 vs 17.0). On price, update cadence, ads and in-app purchases 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 EchoNote 回声笔记 sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

EchoNote 回声笔记 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: CAJ阅读器 has 10 ratings behind it against 1, so its average is the more settled of the two.

CAJ阅读器 ships an update every 11 days, EchoNote 回声笔记 weekly. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | CAJ阅读器 | EchoNote 回声笔记 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (10 ratings)](https://appshunter.io/ios/app/caj-caj/id6447676025/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/echonote/id6760449975/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Freemium | Freemium |
| Size | 45 MB | 6 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Light Speed Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1670291399) | [远魁 黄](https://appshunter.io/developer/1884181435) |

## 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 |


### EchoNote 回声笔记

[App page](https://appshunter.io/ios/app/echonote/id6760449975)

Effortlessly convert spoken words into organized text notes. Capture ideas, meetings, and reminders with a simple tap, then use AI to generate titles, summaries, and key points. Explore your notes further with AI chat functionality.

**Highlights:** One-tap voice recording, Speech-to-text transcription, AI-generated titles and summaries, AI chat for note exploration, iCloud sync across Apple devices, Local-first data storage

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EchoNote Pro Monthly | $6.99 | per month |
| EchoNote Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is CAJ阅读器 free?

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

### Is EchoNote 回声笔记 free?

EchoNote 回声笔记 is free to download, with in-app purchases available.

### Which has better reviews, CAJ阅读器 or EchoNote 回声笔记?

EchoNote 回声笔记 is rated higher. CAJ阅读器 averages 4.6 out of 5 from 10 ratings, while EchoNote 回声笔记 averages 5.0 from 1 ratings.

### Do CAJ阅读器 or EchoNote 回声笔记 have ads?

Neither CAJ阅读器 nor EchoNote 回声笔记 shows ads.

### Which is updated more often, CAJ阅读器 or EchoNote 回声笔记?

CAJ阅读器 ships an update every 11 days, and EchoNote 回声笔记 weekly. Most recently, CAJ阅读器 was updated on September 18, 2026 and EchoNote 回声笔记 on September 20, 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.*