Comparison

Book Summary vs ChessFan

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

Head to head
About

Book Summary

Features
Read full description

Discover the premier platform for bibliophiles and polyglots: Introducing Nine Language – your gateway to a universe of erudition, linguistic variety, and boundless intellectual engagement. - Comprehensive Synopses of 10,000+ Works: Expand Your Intellect. Delve into an extensive repository of over ten thousand synopses, ranging from the canon of classic literature to the latest thought-provoking reads. Engage in deep, meaningful exchanges with an international community of avid readers. - Mindmap offers advanced mind mapping features for complex project planning and brainstorming. It includes unlimited map creation, sophisticated templates, and diverse customization options, ideal for business, educational, or personal use. - Multilingual Support for 9+ Languages: Embrace Global Narratives. Traverse linguistic frontiers with our robust multilingual support, encompassing English, German, French, Italian, Portuguese, Spanish, Russian, Chinese, Japanese, and Korean. Whether immersing yourself in familiar tongues or embracing linguistic diversity, your story awaits. - Bilingual Display Feature: Elevate Your Linguistic Proficiency. Transform your literary journey with our bilingual display feature, designed to enrich your dual-language proficiency. Savor narratives in a dual linguistic context, enhancing your understanding and appreciation of each text. - Tailored Reading Challenges: Expand Your Reading Horizons. Choose from 7-day or 30-day reading challenges tailored to your pace and ambition. Embark on a literary quest that broadens your perspective and fosters a disciplined reading regimen. - Advanced Challenge for Professional Mastery: Specialize Your Expertise. Advance to the Professional Mastery challenge to delve into specialized subjects. Master your domain with an in-depth exploration of literature pertinent to your field. - Enhanced Note-Taking Functionality: Enrich Your Learning Experience. Elevate your reading with dynamic note-taking features. Document your insights, reflections, and learnings as you traverse through each narrative. - Cross-Platform Synchronization: Experience Literary Continuity. Our seamless web and app integration ensures you can transition effortlessly between devices. Maintain your reading flow, whether at home, in transit, or in the quiet of a library. Join the ranks of the global literati with Nine Language. Download today and unlock a realm of limitless knowledge, dialogue, and growth. Begin your odyssey in the world of books now. ***************************** Have a question? If you still can't find the information you need: Contact us: https://ninelanguage.com/contact or email at support@ninelanguage.com Privacy Policy: https://ninelanguage.com/privacy-policy Terms of use: https://ninelanguage.com/terms-of-use

About

ChessFan

Features
Read full description

ChessFan is a chess PDF reader designed for players, coaches, and students. Import your chess books in PDF, detect chessboards on each page, recognize pieces with on-device ML, generate FEN, and jump directly into interactive puzzle practice. Key features: - Scan and digitize handwritten score sheets with AI - Review, edit, and replay games from score sheets on an interactive board - PDF chess book reading with smooth page navigation - Automatic board detection on PDF pages - Piece recognition and FEN generation - Edit and verify FEN before practice - Interactive puzzle practice board - Save and review practice history - Coach-student workflow for training feedback - Offline-first design: core recognition runs on your device - Multi-language UI support Privacy-focused by design: - Your PDF files stay on your device - Board recognition ML runs locally on-device - Score sheet images are temporarily sent to our AI service for recognition and not permanently stored - Recognized move data may be saved to cloud for Pro/Coach subscribers Subscription: - Free tier available - Paid plans unlock advanced cloud and coaching features Need help? Contact: service@aifetel.cc Terms of Use: https://oysape.web.app/terms.html Privacy Policy: https://oysape.web.app/privacy.html

Screenshots

Book Summary4 screens
ChessFan4 screens

Verdict

The call

The clearest difference is iOS requirement: Book Summary at 12.0 against ChessFan's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Book Summary sells 2 in-app purchases, starting at $9.00 per month and ChessFan sells 6 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Book Summary ships an update weekly, ChessFan every 4 days. Both last shipped on November 3, 2026.

Scorecard1 real difference Β· 5 level
Book Summary versus ChessFan: the parameters behind the verdict, then further details
ParameterBook SummaryChessFan
PriceFreeFree
Update frequencyWeeklyEvery 4 days β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 β€” better15.0
Further details β€” not scored
Size90 MB125 MB
Age rating4+4+
DeveloperPhan Tai Phuong丽娟 刘

In-app purchases

2 purchases

Book Summary

Subscriptions2
  • Monthly Premium$9.001 Month
  • Yearly Premium$59.001 Year
6 purchases

ChessFan

Subscriptions6
  • Basic Monthly7 Days trial$3.991 Month
  • Pro Monthly$4.991 Month
  • Coach Monthly$5.991 Month
Show 3 more
  • Basic Yearly$39.991 Year
  • Pro Yearly$49.991 Year
  • Coach Yearly$59.991 Year

Questions

Is Book Summary free?
Book Summary is free to download, with in-app purchases available.
Is ChessFan free?
ChessFan is free to download, with in-app purchases available.
Do Book Summary or ChessFan have ads?
Neither Book Summary nor ChessFan shows ads.
Which is updated more often, Book Summary or ChessFan?
Book Summary ships an update weekly, and ChessFan every 4 days. Most recently, Book Summary was updated on November 3, 2026 and ChessFan on November 3, 2026.

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