# Bookends

> Reference management on the go

Canonical page: [https://chrome-stats.com/d/id739087947](https://chrome-stats.com/d/id739087947)

## Overview

- **ID:** `id739087947`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Sonny Software, LLC
- **Category:** Productivity
- **Rating:** 4.70 / 5 (398 ratings)
- **Version:** 5.0.4
- **Last updated:** 2026-05-01
- **First published:** 2013-11-13
- **Size:** 111 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/bookends/id739087947)
- **Website:** [https://www.sonnysoftware.com](https://www.sonnysoftware.com/)
- **Privacy policy:** [https://www.sonnysoftware.com/privacy-policy/](https://www.sonnysoftware.com/privacy-policy/)

## Description

Bookends is the reference management app you’ve been looking for. The basic version lets you search major sources directly—arXiv, Google Books, Google Scholar, JSTOR, Library of Congress, PubMed, PubMed Central, and Semantic Scholar—or use the built-in browser (EZProxy‑compliant) to download reference metadata and PDFs (access privileges required). Searches return up to 20 references, and only 50 references can be stored in your personal database. You can autofill references using DOI, PMID, ISBN, or arXiv ID, view the text of PDF annotations in a note stream, and create your own notes with a powerful PDF markup engine. A daily barcode scan is supported, along with other features to help you discover, organize, and use reference information.

Upgrading to Standard (one-time) removes search and import limits; Premium (annual) adds cloud sync across iOS devices and Bookends for Mac, library sharing, multiple libraries, unlimited barcode scanning, PDF annotation extraction with deep links, a convenient UI for PDF notes, and Shortcuts automation.

## Rankings

- #79,673 — Overall
- #32 — citation generator

## Review summary

Bookends is praised as a powerful, cross‑platform reference manager with top‑notch PDF handling and annotation, especially on iPad with Apple Pencil, and strong developer support. Users cite reliable syncing across Mac, iPhone, and iPad and a robust feature set that suits scholarly workflows. However, recurring concerns include inconsistent iCloud/mobile syncing, a subscription/upgrade pricing model, and mobile limitations such as missing tags, nested folders, or browser-like tools. Some reviews describe an aging macOS UI and usability friction, plus occasional support/documentation issues. Overall, it’s highly capable but with notable drawbacks around sync reliability and price.

### Pros

- Strong cross-device syncing between Mac, iPhone, and iPad.
- Powerful PDF handling and annotation, with deep linking and Apple Pencil support.
- Active maintenance and highly responsive developer support.
- Comprehensive reference management features that fit scholarly workflows (multi‑window on iPad, metadata handling, and robust library organization).
- Mature, well-regarded workflow that integrates well with macOS/iPadOS platforms.

### Cons

- Sync reliability issues across devices (iCloud delays and inconsistent syncing) that can disrupt workflow.
- Pricing model concerns: upgrades/subscriptions required to retain access and to transfer or use features.
- Mobile limitations: missing tags and nested folders, limited browser-like functionality, and overall UX gaps on iOS.
- Mac UI is dated and the app sometimes feels not modern; lack of Mac App Store presence.
- Occasional support/documentation issues and nagging prompts for ratings.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id739087947)