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Bookends

Reference manager for macOS you buy once, upgrade when you like

Price: $74.99 once

Paid upgradesMajor versions cost again

Buy direct Website

Price read on sonnysoftware.com, the page Buy direct opens.

The catch

Updates stop after two years unless you pay $49.99 for another window; the app keeps working

The full picture

The licence includes two years of updates; after that you either carry on with the version you have or pay $49.99 for a new two-year window. It is macOS only, and the iPhone and iPad companion, Bookends On Tap, is a separate purchase. Sync runs through your own iCloud or Dropbox rather than a hosted service, which is better for privacy and more work to set up. Note the refund policy: all sales are final once the registration code has been sent, so use the free demo first.

Pays back in
10 months
Seats
No Mac count statedLicences are per user, not per computer: one person may install it on as many of their own Macs as they like, but may not run Bookends on two at once.
Developer account
None needed
Buy once$74.99Rent 5 years$475

$400 kept over five years, and you still have the app.
Against Papers at $95 a year, Papers Essentials, $95 per user per year; academics take 40% off. Also replaces Paperpile, Mendeley paid storage and EndNote.

What it looks like

Bookends: The main Bookends window (Library1.bdb): toolbar with Add / Delete / Online Search / Copy Citation / View / E-mail / Open With App / Inspector, Groups sidebar (All, Hits, Attachments, Recently Viewed, Trash), the reference list with Authors/Date/Title columns and a selected row, the attached PDF open in the lower pane with green highlighting and page controls, and the note stream down the right side with coloured quote cards. Status bar reads 'Showing 56 of 56 refs'. 2224x1620. Best single image for this app.
The main Bookends window (Library1.bdb). Vendor site (sonnysoftware.com/bookends-for-mac/features)
Bookends: Main Bookends window (Poets.bdb) with the same toolbar and Groups sidebar, a nine-row reference list, and the term/tag cloud filling the lower pane with weighted words (Baudelaire, Keats, Shelley selected and highlighted blue); 'Top 200 (of 624)' picker and a 'Title, Abstract, & Notes' scope popup in the status bar. 2296x1712.
Main Bookends window (Poets.bdb) with the same toolbar and Groups sidebar, a nine-row reference list, and the term/tag cloud filling the lower pane with weighted words (Baudelaire, Keats, Shelley selected and highlighted blue); 'Top 200 (of 624)' picker and a 'Title, Abstract, & Notes' scope popup in the status bar. Vendor site
Bookends: The bibliography Format editor window ('Format: Chicago 17th A.fmt'): scrolling list of .fmt style files on the left with checkboxes, and on the right the Bibliography Options / Citation Options / Name Punctuation / Notes tabs with Type, author-name and field-order controls, sort order, page-range and hanging-indent settings, plus a live Example Bibliography at the bottom. 2026x1750.
The bibliography Format editor window ('Format. Vendor site

Images belong to their developers.

What you’re buying

Bookends has been the Mac academic's reference manager since before the phrase "cloud sync" existed, and it still behaves like software written for one platform by people who use it. Your references and PDFs sit in a local database you can point Finder at. Searching PubMed, library catalogues or Google Scholar happens inside the app, and what comes back lands in your library with its metadata filled in. When you write, it formats citations for Word, Pages, Mellel and Scrivener — that last one matters if you are working on something book-length.

$74.99 buys a licence with two years of updates. When the window closes, nothing locks: the app you have keeps running, and a new two-year window costs $49.99 whenever you decide you want one. In practice that is under twenty dollars a year if you always upgrade, and nothing at all if you do not.

Read the boundaries before paying. Mac only. The iOS app, Bookends On Tap, is bought separately. Sync is your own iCloud or Dropbox folder, which means no subscription and also no support line when it misbehaves. And sales are final the moment the registration code is issued, so run the demo properly — import a real chunk of your library and write a real paragraph with it — before you buy.

What owners report

Points that recur across the discussions below. A report of what users say, not our verdict: we don’t review software.

Praised

  • Owners repeatedly give AppleScript as the reason they stay, describing Bookends driven from Alfred, TextExpander and their own scripts rather than used directly
  • Several long-term users say the draw is keeping many separate libraries, each with its own attachments folder, and indexing those folders in DEVONthink
  • Scrivener writers in these threads report the temporary-citation round trip is simpler to set up than anything they got working with Zotero

Criticised

  • A recurring complaint is friction in ordinary work — people describe having to move through several parts of the interface for routine tasks, and some left over it
  • Multiple owners report that bug reports and feature requests get a fast, personal reply and then no change; others in the same threads defend that as the price of one-developer software
  • Newcomers repeatedly say the tutorial and documentation lag behind the app, and that getting the promised value assumes you will write some AppleScript

Details

The price in full

$74.99 for a single-user licence, which includes two years of free updates. 10% off for two copies, 25% off for three or more. Upgrading from Bookends 11 or later costs $49.99 and resets the two-year update window. A bundle with the Mellel word processor is $114.99.

The Bookends page at sonnysoftware.com
The developer’s own page. sonnysoftware.com, captured 22 Sep 2026
Free trial
Yes
Works offline
Yes
Apple Silicon
Native
On Setapp
No
Minimum macOS
not stated
Developer
Sonny Software

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