# CAJ转换器 vs 纳米AI

The clearest difference is review sentiment: 纳米AI at 54% against CAJ转换器's 20%. 纳米AI also leads on update cadence (weekly vs every 2 months). CAJ转换器's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. CAJ转换器 sells 3 in-app purchases, starting at $3.99 per month and 纳米AI sells 14 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

CAJ转换器 ships an update every 2 months, 纳米AI weekly. The most recent releases landed on October 5, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | CAJ转换器 | 纳米AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (211 ratings)](https://appshunter.io/ios/app/ai/id6737763506/reviews)** |
| Number of ratings | — | **211** |
| Positive reviews | 20.0% of reviews | **53.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 15 MB | 231 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Beijing Chejiang Internet Technology Co., Ltd.](https://appshunter.io/developer/1680696844) | [Beijing Qihoo Technology Co Ltd](https://appshunter.io/developer/441216575) |

## What reviewers say

### CAJ转换器

[App page](https://appshunter.io/ios/app/caj-caj/id6447243908)

Convert academic document formats like CAJ, NH, and KDH into clear PDF and Word files. Easily extract text, images, and tables, and convert other document types to PDF.

**Highlights:** Convert CAJ, NH, KDH to PDF and Word, Extract text, images, and tables, Convert PDF to Word, Excel, PPT, TXT, JPG, PNG, Compress and encrypt PDF files, Convert Word, Excel, PPT, TXT, images to PDF

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $3.99 | per month |
| 年会员 | $9.99 | per year |
| 永久会员 | $14.99 | one-time |


### 纳米AI

[App page](https://appshunter.io/ios/app/ai/id6737763506)

This app acts as a super intelligent agent, generating expert-level videos, reports, and presentations from simple text prompts. It offers specialized AI agents for various tasks, including image editing, digital human video creation, and PPT generation, all powered by multiple large language models.

**Highlights:** Generate videos, reports, and PPTs from text, Specialized AI agents for various tasks, Digital human video creation, Professional image editing, PPT generation from themes or files, Integrated with 16 large language models, Personalized knowledge base

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月VIP | $6.99 | per month |
| 连续包季VIP | $19.99 | per 3 months |
| 连续包年VIP | $69.99 | per year |
| 100纳米 | $0.99 | one-time |
| 300纳米 | $3.99 | one-time |
| 1个月VIP | $7.99 | one-time |
| 1000纳米 | $14.99 | one-time |
| 6个月VIP | $49.99 | one-time |
| 年卡（活动） | $59.99 | one-time |
| 5000纳米 | $69.99 | one-time |
| 15个月VIP（限时活动） | $79.99 | one-time |
| 12个月VIP | $79.99 | one-time |
| 36个月 | $99.99 | one-time |
| 10000纳米 | $149.99 | one-time |

**What reviewers like**

- 🚀 Fast search and text organization capabilities
- 👍 Feels good
- 🚀 Fast response speed
- 👍 Convenient and practical

**What reviewers complain about**

- 🐛 No dark mode
- 🐛 Unable to open on Apple Mac
- 🗑️ Trash software
- 🗑️ Deceptive advertising
- 🗑️ Terrible company and software

**Reported bugs**

- Unable to receive verification code for overseas users
- App crashes on older devices

**Requested features**

- Dark mode option
- AI video generation queue improvement


## Frequently asked questions

### Is CAJ转换器 free?

CAJ转换器 is free to download, with in-app purchases available.

### Is 纳米AI free?

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

### Do CAJ转换器 or 纳米AI have ads?

Neither CAJ转换器 nor 纳米AI shows ads.

### Which is updated more often, CAJ转换器 or 纳米AI?

CAJ转换器 ships an update every 2 months, and 纳米AI weekly. Most recently, CAJ转换器 was updated on October 5, 2026 and 纳米AI on October 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.*