Comparison

BookLens vs Book Memo

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

Head to head
About

BookLens

Features
Read full description

BookLens (formerly Book Tracker) is a simple reading log and book journal for people who want to read more and remember what they read. TRACK EVERY BOOK β€’ Add a book in seconds: scan the book cover and the title and author are filled in for you, from covers in more than 100 languages β€’ See your whole library as a grid of covers, filtered by Want to read, Reading, Paused or Finished β€’ Check in the page you reached, or start again with Read again β€’ Every book keeps its reading history in your reading log, from the first check-in to the last page TIME YOUR READING β€’ A reading timer for every session, with an optional goal: minutes or pages β€’ Pause and resume; the timer keeps counting even if the app is closed β€’ See your time, pages and pages per minute when you finish β€’ Share a clean 9:16 image of your session to your stories SET A GOAL AND KEEP YOUR STREAK β€’ One goal at a time: pages per day, week or month β€’ Watch your progress ring fill up and your streak grow β€’ Weekly stats: days read, pages read, hours read and average speed SAVE QUOTES AND BOOK NOTES β€’ A quote saver that reads the page for you: photograph it, tap the first and last word, and the passage is saved as a note β€’ Write your own thoughts and add tags, like a book journal that sits beside each book β€’ Turn any note into a beautiful quote card for your stories and friends β€’ Browse every note across your library, filtered by book or tag PRIVATE BY DESIGN β€’ No ads and no tracking, and free to start β€’ Page photos are only read and never kept; photo metadata such as location is removed β€’ Delete your account and all your data from the app at any time BookLens is available in English and Vietnamese. BOOKLENS PRO Unlimited notes, your own photo and PRO backgrounds on share cards, full weekly/monthly/yearly recaps, and reading reminders. Available as an auto-renewing monthly or yearly subscription. Payment is charged to your Apple ID at confirmation. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings > [your name] > Subscriptions. Terms of Use (EULA): https://ailent.vn/booktracker/terms-en Privacy Policy: https://ailent.vn/booktracker/privacy-en

About

Book Memo

Features
Read full description

Book Memo is a Japanese-language app. Every screen is in Japanese, and automatic cover lookup is designed for books published in Japan. Keep the books you have read on a wooden shelf, cover out, together with what you thought while reading them. - Type a title and the cover, author and publisher are filled in for you - Four views: shelf, spines, list and cards - Three kinds of notes (thoughts, summaries and quotes), each with a page number - Full-text search across every note, title, author and publisher - To-read, reading and finished, with 5-star ratings - When you finish a book, see other books by the same author on Rakuten Books (ad links) - Reading stats: books finished this year and the authors you read most - Export to Markdown (one file per book, handy for Obsidian) or CSV (for Notion), and restore from a backup file - No account and no email address needed. Your notes stay on your device Please note - Covers and book data come from Rakuten Books (Supported by Rakuten Developers). Lookup may be temporarily unavailable when busy, and books published outside Japan are often not found. You can always set a cover from your own photo, and your books and notes are never lost

Screenshots

BookLens4 screens
Book Memo4 screens

Verdict

The call

The clearest difference is in-app purchases: Book Memo at none against BookLens's 2. On price, update cadence, ads and device support 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. BookLens sells 2 in-app purchases, starting at $4.99 per month. Book Memo asks for nothing beyond the download.

UpkeepUpdate frequency

BookLens ships an update fortnightly, Book Memo every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard1 real difference Β· 5 level
BookLens versus Book Memo: the parameters behind the verdict, then further details
ParameterBookLensBook Memo
PriceFreeFree
Update frequencyFortnightlyEvery 2 weeks β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad β€” betteriPhone
Requires iOS16.416.4
Further details β€” not scored
Size62 MB36 MB
Age rating4+4+
DeveloperNguyen Manh CamYuki Tagami

In-app purchases

2 purchases

BookLens

Subscriptions2
  • PRO Monthly$4.991 Month
  • PRO Yearly$39.991 Year
None

Book Memo

No in-app purchases

Questions

Is BookLens free?
BookLens is free to download, with in-app purchases available.
Is Book Memo free?
Book Memo is free to download, with no in-app purchases.
Do BookLens or Book Memo have ads?
Neither BookLens nor Book Memo shows ads.
Which is updated more often, BookLens or Book Memo?
BookLens ships an update fortnightly, and Book Memo every 2 weeks. Most recently, BookLens was updated on November 5, 2026 and Book Memo on October 31, 2026.

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