Comparison

Natural Syntax vs Book Quote Saver

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

Head to head
About

Natural Syntax

This app enhances reading comprehension by subtly styling text to highlight parts of speech, similar to syntax highlighting in programming. It offers a native ePub reader with full text search and a discovery service for public domain books. Users can customize styling and themes for an improved reading experience.

Highlights
  • Syntax highlighting for parts of speech
  • Native paginated ePub display
  • Full text search
  • Public domain book discovery
  • Customizable colors and styles
  • Multiple themes (Dark, Light, White)
Features
Read full description

As programmers read source code we passively absorb some of the meaning via syntax highlighting for the language. NaturalSyntax aims to do the same thing with natural human language, this will improve reading comprehension and understanding by passively absorbing the parts of speech via subtle styling of the text. Features: • Fully native paginated display of syntax highlighted parts of speech for ePub files • Full text book search • ePub parsed on demand for improved experience • Includes discovery service to download thousands of public domain books • Allows customization of colors and styles for each part of speech • Includes Dark, Light and White themes with different default colors • Allows you to turn on or off highlighting of each part of speech • Synchronizes preferences between all your devices • Uses system interface for interacting with your files • Does not collect or store any personal information Limitations: • Can only process English ePub files • Can only search for public domain books when signed into iCloud

About

Book Quote Saver

Features
Read full description

BOOK QUOTE SAVER – KEY NOTES Scan passages & remember pages —— WHY YOU WILL LOVE IT —— Book Quote Saver is the fastest way to capture, tag and revisit inspiring lines while you read. One tap opens the camera-scanner, OCR grabs the text, and the app saves the passage with the book title, page number and your own note. —— HOW IT WORKS —— 1. Add a book – use our quick search to find titles and authors. 2. Scan a passage – our offline OCR recognises printed or e-ink screens in your language. 3. Edit & enrich – confirm the text, add a page number, note, or category. That’s it! Your personal highlight vault is ready whenever inspiration strikes. —— KEY FEATURES —— • Lightning-fast OCR scanner – built-in text scanner auto-fills your quote. • Powerful organisation – unlimited categories, book list view. • Study tools – collect notes for essays, build flash-cards, track study sessions. Perfect for students & researchers. • Multi-format friendly – works with printed books, Kindle, PocketBook, Kobo or any other screen. —— DESIGNED FOR READERS —— Minimalist interface keeps you focused on the text, not the technology. No ads, accounts or clunky menus—just open, scan, save. Whether you’re a literature lover, non-fiction note-taker, student, teacher or creator, Book Quote Saver becomes your ever-growing library of inspiration. —— PRIVACY BY DEFAULT —— We never collect your quotes or analytics. All recognition happens on-device, and iCloud sync is end-to-end encrypted. —— UPCOMING ROADMAP —— We have a full roadmap of ideas. Be part of our development and share your thoughts!  Join thousands of readers turning fleeting lines into lasting insights. Download Book Quote Saver – Key Notes today and build your personal quote library! —— CONTACT & SUPPORT —— Questions, feature ideas, or found a bug? Email support.bookquotesaver@asthc.com

Screenshots

Natural Syntax4 screens
Book Quote Saver4 screens

Verdict

The call

The clearest difference is update cadence: Book Quote Saver at every 2 months against Natural Syntax's every 12 months. Natural Syntax's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases 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

Both are free to download. Natural Syntax sells 1 one-off in-app purchase and Book Quote Saver sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Natural Syntax ships an update every 12 months, Book Quote Saver every 2 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 8 level
Natural Syntax versus Book Quote Saver: the parameters behind the verdict, then further details
ParameterNatural SyntaxBook Quote Saver
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 12 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size11 MB14 MB
Age rating12+4+
DeveloperJeremy BuchmanBARTLOMIEJ IGNACY SZCZEPANIAK

In-app purchases

1 purchases

Natural Syntax

One-time1
  • Color Customization$0.99
1 purchases

Book Quote Saver

One-time1
  • Full Access Promo$3.99

Questions

Is Natural Syntax free?
Natural Syntax is free to download, with in-app purchases available.
Is Book Quote Saver free?
Book Quote Saver is free to download, with in-app purchases available.
Do Natural Syntax or Book Quote Saver have ads?
Neither Natural Syntax nor Book Quote Saver shows ads.
Which is updated more often, Natural Syntax or Book Quote Saver?
Natural Syntax ships an update every 12 months, and Book Quote Saver every 2 months. Most recently, Natural Syntax was updated on October 12, 2026 and Book Quote Saver on October 5, 2026.

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