# Nutstore vs CAJ文献阅读器

The clearest difference is review sentiment: Nutstore at 89% against CAJ文献阅读器's 65%. Nutstore also leads on update cadence (monthly vs every 4 months). CAJ文献阅读器's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Nutstore sells 2 in-app purchases, starting at $34.99 per year and CAJ文献阅读器 sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Nutstore ships an update monthly, CAJ文献阅读器 every 4 months. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Nutstore | CAJ文献阅读器 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (431 ratings)](https://appshunter.io/ios/app/nutstore-cloud-storage-and-backup/id444442371/reviews)** | — |
| Number of ratings | **431** | — |
| Positive reviews | **89.2% of reviews** | 65.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 108 MB | 53 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yicun Network Technology Co. Ltd.](https://appshunter.io/developer/444442374) | [Meitian Trading](https://appshunter.io/developer/1549616114) |

## What reviewers say

### Nutstore

[App page](https://appshunter.io/ios/app/nutstore-cloud-storage-and-backup/id444442371)

Securely store, sync, and access your files from any device. Organize and share documents, photos, and videos with features like offline access and version history. Offers professional-grade cloud storage with flexible subscription plans.

**Highlights:** Automatic file synchronization across devices, Offline access via favorite folders, File sharing with access control, Incremental backup and version history, WebDAV protocol support for third-party apps, Smart file viewer with reading position restore

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nutstore Pro for One Year | $34.99 | per year |
| Nutstore Advanced Pro for One Year | $69.99 | per year |

**What reviewers like**

- 🚀 Fast and reliable sync across multiple platforms
- 👍 Simple, clean, and intuitive user interface
- 🔒 Secure and private cloud storage solution
- 🌍 Works seamlessly in China without blocking
- 💼 Excellent for cross-platform file sharing and collaboration

**What reviewers complain about**

- 📦 Limited free storage capacity (1GB)
- ⚠️ Easy to accidentally change local/cloud sync settings
- 🔘 Non-intuitive folder sync setup process
- 👥 Limited number of people for folder sharing
- 📹 Free version has insufficient bandwidth for video uploads

**Reported bugs**

- Cannot upload local photos on iPhone 5, 5s, 7 Plus
- App crashes when selecting files to upload from other apps (v5.0.1)
- Large PDF files (>20MB) fail to open with no download indicator
- Sync status information displays incorrectly
- Poor customer support response for technical issues

**Requested features**

- Increase free storage capacity to 3GB monthly for uploads/downloads
- Add Face ID authentication option for iOS
- Improve Windows client startup speed
- Add thumbnail preview for image files instead of generic icons
- Increase free version bandwidth for video uploads


### CAJ文献阅读器

[App page](https://appshunter.io/ios/app/caj/id1669879414)

This app allows you to easily read and convert CAJ, NH, and KDH document formats, commonly used for academic papers from Chinese academic databases. It supports converting these files to PDF or Word, with OCR capabilities for text extraction from scanned images. You can also import files from messaging apps and manage your reading history.

**Highlights:** Read CAJ, NH, KDH formats, Convert CAJ to PDF, Convert CAJ to Word, OCR text recognition, Import from messaging apps, Reading history management

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

**In-app purchases (3)**

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


## Frequently asked questions

### Is Nutstore free?

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

### Is CAJ文献阅读器 free?

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

### Do Nutstore or CAJ文献阅读器 have ads?

Neither Nutstore nor CAJ文献阅读器 shows ads.

### Which is updated more often, Nutstore or CAJ文献阅读器?

Nutstore ships an update monthly, and CAJ文献阅读器 every 4 months. Most recently, Nutstore was updated on September 24, 2026 and CAJ文献阅读器 on September 16, 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.*