# ivySCI vs CAJ Converter

The clearest difference is review sentiment: ivySCI at 80% against CAJ Converter's 48%. ivySCI also leads on update cadence (fortnightly vs every 2 months). CAJ Converter's advantage is iOS requirement (12.0 vs 15.5). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ivySCI sells 3 in-app purchases, starting at $2.99 per month and CAJ Converter sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ivySCI ships an update fortnightly, CAJ Converter every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | ivySCI | CAJ Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/ivysci/id1600901406/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | **80.0% of reviews** | 47.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Freemium | Freemium |
| Size | 66 MB | 55 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nanjing IvyScience Information Technology Co., Ltd.](https://appshunter.io/developer/1600901408) | [Meitian Trading](https://appshunter.io/developer/1549616114) |

## What reviewers say

### ivySCI

[App page](https://appshunter.io/ios/app/ivysci/id1600901406)

This app helps researchers manage and read scientific papers efficiently. It automatically extracts metadata, offers AI-assisted reading and proofreading, and allows for easy note-taking and citation integration with word processors.

**Highlights:** Automatic PDF metadata identification, AI-assisted reading and Q&A, Built-in translation and dictionary, Reference extraction and download, Image extraction and side-by-side viewing, Cloud-synced notes across devices, Word processor citation plugin

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ivySCI VIP Monthly Service | $2.99 | per month |
| Annual VIP Subscription | $29.99 | per year |
| Annual AI Pro Subscription | $39.99 | per year |


### 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 ivySCI free?

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

### Is CAJ Converter free?

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

### Do ivySCI or CAJ Converter have ads?

Neither ivySCI nor CAJ Converter shows ads.

### Which is updated more often, ivySCI or CAJ Converter?

ivySCI ships an update fortnightly, and CAJ Converter every 2 months. Most recently, ivySCI was updated on October 24, 2026 and CAJ Converter on October 24, 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.*