# LL任务管理信息系统 vs CAJ Converter

The clearest difference is in-app purchases: LL任务管理信息系统 at none against CAJ Converter's 3. LL任务管理信息系统 also leads on update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CAJ Converter sells 3 in-app purchases, starting at $2.99 per month. LL任务管理信息系统 asks for nothing beyond the download.

LL任务管理信息系统 ships an update fortnightly, CAJ Converter every 2 months. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | LL任务管理信息系统 | CAJ Converter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 47.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | — | Freemium |
| Size | 78 MB | 55 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [伟豪 马](https://appshunter.io/developer/1456244834) | [Meitian Trading](https://appshunter.io/developer/1549616114) |

## What reviewers say

### LL任务管理信息系统

[App page](https://appshunter.io/ios/app/ll/id1597872822)

**Features:** macOS Compatibility

**In-app purchases:** none


### CAJ Converter

[App page](https://appshunter.io/ios/app/caj-converter/id1603045684)

Easily convert Chinese academic journal files (CAJ, NH, KDH) into PDF or Word documents. Extract text for editing or create clear PDF versions for reading and sharing.

**Highlights:** Convert CAJ to PDF, Convert CAJ to Word, Text recognition for Word conversion, Preview before PDF export, Supports .caj, .nh, .kdh formats

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

**In-app purchases (3)**

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


## Frequently asked questions

### Is LL任务管理信息系统 free?

LL任务管理信息系统 is free to download, with no in-app purchases.

### Is CAJ Converter free?

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

### Do LL任务管理信息系统 or CAJ Converter have ads?

Neither LL任务管理信息系统 nor CAJ Converter shows ads.

### Which is updated more often, LL任务管理信息系统 or CAJ Converter?

LL任务管理信息系统 ships an update fortnightly, and CAJ Converter every 2 months. Most recently, LL任务管理信息系统 was updated on October 2, 2026 and CAJ Converter on October 14, 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.*