Comparison

Bookends vs Plum Blossom Lite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bookends

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
Read full description

Bookends is the reference management app you've been looking for. The basic version offers: • Search online sites directly (arXiv, Google Books, Google Scholar, JSTOR, the 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 can return a maximum of 20 references, and only 50 references can be stored in your personal database. • Use unique identifiers such as DOI, PMID, ISBN, or arXiv id to autofill references. • View the text of PDF annotations in a note stream, and create your own with our powerful PDF markup engine. • Barcode scanning, one per day. • And many more features designed to help you discover, organize, and use reference information. Standard, one-time purchase ($14.99): • No limit on searches or importing. Premium, yearly subscription ($14.99). Requires a Standard purchase. • Cloud sync with all your iOS devices and Bookends for Mac (separate purchase). • Share online libraries with colleagues. • Scan documents with Mellel Mobile*. • Create multiple libraries. • Unlimited barcode scanning. • Extract PDF annotations with deep links to annotations and text. • Convenient UI to add PDF notes to the library. • Automate your actions with Shortcuts. * iPad-only. Requires a Mellel Mobile Premium subscription. Subscription is for one year and has an auto-renew option. The subscription can be managed in iOS -> Settings > [your name] > Subscriptions. A subscription will renew if it isn't canceled at least 24 hours before the renewal date. If the subscription is not renewed, Premium will be disabled but Standard will continue to work. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Plum Blossom Lite

Features
Read full description

Plum Blossom Lite App, or Mei Hua Yi Shu 梅花易數, is an ancient Chinese Calculation Method based on the Yi Jing 易經. Shao Kang Jie 邵康節, who was also known as Shao Yong 邵雍, discovered Plum Blossom (Mei Hua Yi Shu) Divination during the Song Dynasty. The Plum Blossom Methods do not require the use of coins, yarrow stalks, dice, tortoise shells, or any other object as a tool to derive a Gua. Instead, the use the mind, images, and numbers. Many things are taken as omens: anything out of the ordinary, no matter how small, something or someone coming from a certain direction, birds fighting, a girl falling out of a tree, a strange expression on someone’s face, or the Time and Date. These are all the things that can be translated into Gua and analyzed. There are two ways the Universe uses to send a message to us. One is to let us know something before it happens. It is sent by letting our attention be drawn to some strange events or phenomena. The other is to reply to our inquiry. Some diviners can interpret the message by intuition. This requires special blessing from Heaven to have such ability. For most people, a systematic method can be used. This Application Includes: 1) Five (5) Methods available to derive the Hexagram: -a. use the Gregorian Calendar (Hour, Day, Month, Year) to derive the Hexagram -b. use the Chinese Lunar Calendar (Hour, Day, Month, Year) to derive the Hexagram -c. use the Name and Surname to derive the Hexagram -d. use the Date (without Hour) to derive the Hexagram -e. use the Japanese era Date (without hour) to derive the Hexagram. 2) Introduction to Plum Blossom Divination. - Relationship between Body (體 Ti) and Application (用 Yong). 3) Glossary - Analyzing the: - Gua 卦 - Change Line (爻 Yao) - Body Gua (體 Ti) - Application Gua (用 Yong) - Original Gua (本 Ben) - Mutual Gua (互 Hu) - Transform Gua (變 Bian) - Engender (生 Sheng) - Restrain (剋 Ke) - Same Element (比和 Bi He) - Gua Qi (卦氣) - Prosper (旺 Wang). 4) Divination Clues: - Motion and Stillness - Incoming and Outgoing - Guessing Game - Weather Divination - Human Affairs Divination - Home Affairs Divination - Feng Shui Divination - Marriage Divination - Fame Divination - Wealth Divination - Trip Divination - Lost and Found Divination. 5) Gua Relationships. 6) Ti Gua Interaction: Qian generates Ti | Qian controls Ti | Dui generates Ti | Dui controls Ti | Li generates Ti | Li controls Ti | Zhen generates Ti | Zhen controls Ti | Xun generates Ti | Xun controls Ti | Kan generates Ti | Kan controls Ti | Gen generates Ti | Gen controls Ti | Kun generates Ti | Kun controls Ti. 7) Body Parts and Disease: - Analysis of the Eight Trigrams, as the Body Gua. 8) Gua Implications: Eight Trigrams Analysis for prediction: - Heaven Implications - Earth Implications - Human Implications - Body Parts - Sickness - Human Nature - Animals - Plants & Stationary Objects - Housing - Food - Trips - Lost & Found - Numbers Mei Hua Yi Shu (Plum Blossom Divination) is a name that broadly covers any systematic method that can be used. In all these methods, the Trigrams and Hexagrams are used. Some methods do not require the knowledge of the Yi Jing text. Others may use the Yi Jing text. Synchronicity is the basis of divination. It is a way the Universe is sending a message to human kind.

Screenshots

Bookends4 screens
Plum Blossom Lite4 screens

Verdict

The call

The clearest difference is price: Bookends at Free against Plum Blossom Lite's $12.99. Bookends also leads on update cadence (every 2 months vs every 13 months). Plum Blossom Lite's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 18.6). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Bookends is free to download; Plum Blossom Lite costs $12.99 up front. Bookends sells 2 in-app purchases, starting at $14.99 per year. Plum Blossom Lite asks for nothing beyond the download.

UpkeepUpdate frequency

Bookends ships an update every 2 months, Plum Blossom Lite every 13 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Bookends versus Plum Blossom Lite: the parameters behind the verdict, then further details
ParameterBookendsPlum Blossom Lite
PriceFree — better$12.99
Rating4.7 (400 ratings) — better—
Positive reviews76.4% of reviews—
Number of ratings400 — better—
Update frequencyEvery 2 months — betterEvery 13 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.611.0 — better
Further details — not scored
Size114 MB68 MB
Age rating4+4+
DeveloperSonny Software, LLCTakis Karagiannopoulos

Bugs and requests

Bookends

Reported bugs

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

Requested features

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

Plum Blossom Lite

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Bookends

Subscriptions1
  • Premium3 Months trial$14.991 Year
One-time1
  • Standard$14.99
None

Plum Blossom Lite

No in-app purchases

Questions

Is Bookends free?
Bookends is free to download, with in-app purchases available.
Is Plum Blossom Lite free?
Plum Blossom Lite costs $12.99, with no in-app purchases.
Do Bookends or Plum Blossom Lite have ads?
Neither Bookends nor Plum Blossom Lite shows ads.
Which is updated more often, Bookends or Plum Blossom Lite?
Bookends ships an update every 2 months, and Plum Blossom Lite every 13 months. Most recently, Bookends was updated on October 23, 2026 and Plum Blossom Lite on October 29, 2026.

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