# Bookends vs Papers by ReadCube

The clearest difference is rating: Bookends at 4.7 against Papers by ReadCube's 3.7. Bookends also leads on review sentiment (76% vs 41%). Papers by ReadCube's advantage is in-app purchases (none vs 2) and iOS requirement (15.6 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Bookends sells 2 in-app purchases, starting at $14.99 per year. Papers by ReadCube asks for nothing beyond the download.

Bookends holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 394 and 551 respectively. Written reviews point the same way: 76% of Bookends's written reviews are positive against 41% of Papers by ReadCube's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on August 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Bookends | Papers by ReadCube |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (394 ratings)](https://appshunter.io/ios/app/bookends/id739087947/reviews)** | [3.7 (551 ratings)](https://appshunter.io/ios/app/papers-by-readcube/id864042981/reviews) |
| Number of ratings | 394 | **551** |
| Positive reviews | **76.4% of reviews** | 41.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 111 MB | 77 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sonny Software, LLC](https://appshunter.io/developer/417583547) | [Digital Science & Research Solutions Inc.](https://appshunter.io/developer/864042984) |

## What reviewers say

### Bookends

[App page](https://appshunter.io/ios/app/bookends/id739087947)

Manage your research references and PDFs on your mobile device. Search online databases, import metadata, annotate PDFs, and organize your library. Offers basic functionality for free with optional one-time purchase and yearly subscription for advanced features like cloud sync and unlimited imports.

**Highlights:** Search online reference databases, Import metadata and PDFs, PDF annotation and markup, Barcode scanning for references, Cloud sync across devices, Share online libraries, Create multiple libraries

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $14.99 | per year |
| Standard | $14.99 | one-time |

**What reviewers like**

- 🚀 Seamless sync across devices
- 👍 Excellent PDF annotation tools
- 🔒 Reliable and stable
- 💡 Powerful reference management features
- 👍 Responsive and helpful developer support

**What reviewers complain about**

- 🐛 Sync issues with iCloud and PDF files
- 🔒 Subscription model for essential features
- 👎 Outdated and clunky user interface
- 🔒 Limited functionality on iOS without subscription

**Reported bugs**

- Incompatibility with iCloud Optimized Storage
- Unreliable sync between desktop and mobile versions
- Occasional data loss or corruption

**Requested features**

- Nested folders and tags for better organization
- Automatic PDF metadata extraction
- Improved search and filtering capabilities
- Seamless integration with third-party services


### Papers by ReadCube

[App page](https://appshunter.io/ios/app/papers-by-readcube/id864042981)

Manage, read, and discover research literature on your mobile devices. Annotate PDFs, organize your library with custom lists and tags, and receive personalized recommendations for new papers. Syncs seamlessly with desktop and web applications.

**Highlights:** Read and manage research papers, Annotate PDFs with notes and highlights, Organize library with custom lists and tags, Discover new research with personalized recommendations, Search and download articles, Sync across devices

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Seamless syncing across devices
- 📚 Excellent for organizing and managing research papers
- 🔍 Helpful search and discovery features
- 💻 Good integration with desktop and web versions
- 📝 Useful annotation and highlighting tools

**What reviewers complain about**

- 🐛 Buggy annotation and handwriting tools
- 🔍 Inconsistent search and metadata retrieval
- 💾 Unreliable cloud sync and data loss issues
- 🖍️ Limited annotation features compared to competitors
- 🕰️ Slow development and lack of updates

**Reported bugs**

- Frequent app crashes and freezes
- Sync issues causing data loss and duplication
- Unreliable PDF downloads and access
- Inconsistent behavior of annotation tools
- Compatibility problems with newer devices and OS versions

**Requested features**

- Add eraser tool for handwritten annotations
- Improve PDF viewing and navigation experience
- Implement better organization and folder management
- Integrate citation and bibliography tools
- Provide more customization options


## Frequently asked questions

### Is Bookends free?

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

### Is Papers by ReadCube free?

Papers by ReadCube is free to download, with no in-app purchases.

### Which has better reviews, Bookends or Papers by ReadCube?

Bookends is rated higher. Bookends averages 4.7 out of 5 from 394 ratings, while Papers by ReadCube averages 3.7 from 551 ratings.

### Do Bookends or Papers by ReadCube have ads?

Neither Bookends nor Papers by ReadCube shows ads.

### Which is updated more often, Bookends or Papers by ReadCube?

Bookends ships an update every 2 months, and Papers by ReadCube every 2 months. Most recently, Bookends was updated on August 28, 2026 and Papers by ReadCube 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.*