Comparison

読書カレンダー vs Reading Memory

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

Head to head
About

読書カレンダー

Visually track your reading habits with a calendar-style log. Easily register books by scanning barcodes or searching by title. Organize your read books on a digital bookshelf and analyze your progress with premium features.

Highlights
  • Calendar-style reading log
  • Book cover display on calendar
  • Barcode book registration
  • Searchable digital bookshelf
  • Reading status categorization
  • Reading progress visualization (premium)
Features
Read full description

◇Beautifully Record and Manage Your Daily Reading on a Calendar◇ BookCal (Bukukare) is a simple, intuitive reading log app designed for book lovers. View your reading history at a glance in a calendar format and build a consistent reading habit. 【Key Features】 Calendar-style Reading Log ・Visually record your daily reading on a calendar ・Book cover images appear on the calendar, making your reading history instantly visible ・Quickly look back at past reading records Easy Book Registration ・Instantly register books by scanning barcodes ・Search for and add books by title Digital Bookshelf ・Manage the books you've read on a beautifully organized bookshelf ・Find specific books quickly using search, filter, and sort functions ・Categorize books by reading status (Reading, Finished, Unread) Visualize Reading Progress (Premium Feature) ・Analyze reading patterns with monthly and yearly graphs ・Set reading goals and track your progress ・View detailed statistics (total books read, consecutive reading streaks, etc.) Start your reading journey with BookCal—designed to provide a richer reading experience for everyone who loves books! 【BookCal Terms of Service】 https://tsutsunoidoblog.com/book_diary_terms_of_service/ 【BookCal Privacy Policy】 https://tsutsunoidoblog.com/bookdiary_privacy_policy/

About

Reading Memory

This app helps you build a consistent reading habit and retain information from the books you read. It allows you to track reading days, manage your to-read pile, and take private notes on your books. Advanced features like AI-powered key point extraction are available through an optional subscription.

Highlights
  • Build daily reading habits
  • Track reading streaks and finished books
  • Organize to-read and finished book piles
  • Take private notes and sticky notes
  • Search and add books via barcode or title
  • Generate reading cards and badges
  • AI-powered key point extraction (subscription)
Features
Read full description

Make reading a daily habit, and remember the books you've read. Reading Memory keeps every book you read and every line you write, one book at a time, on your own bookshelf. You want to read more, but it never sticks. You finish a book, then can't recall what was in it. The books you bought sit on a pile, unread. Reading Memory is made for that. MAKE READING A DAILY HABIT On days you read, tap "Read today" once. Even a day with one page counts. Your reading days fill a calendar, and your streak and the number of books you finished this year go up. You can also tap from Home Screen and Lock Screen widgets. NEVER FORGET WHAT YOU READ Notes you write while reading show up on your bookshelf a few days later, with how long ago you wrote them ("written 72 days ago"). Read them again and add a line right there. When you reread a book, the notes from your last read are on that book's page. FINISH YOUR TO-READ PILE, ONE BOOK AT A TIME Books you own but haven't started sit in a pile at the bottom of your bookshelf. Tap the pile to start the top book. When you finish one, the app picks the next book from your pile. PRIVATE BY DESIGN No social feed, no followers, no public reviews. Only you can read what you write. — WHAT YOU CAN DO ◆ Bookshelf Finished books stand on a shelf for each year. Books you're reading lie face up, and books you haven't started are stacked. You can also add the books you've already read, one after another. ◆ Add books Search by title or scan the barcode. Book data comes from Google Books, Open Library, openBD, and Rakuten Books. There is no limit on how many books you can add. ◆ Sticky notes for novels Write about characters, lines you loved, and how you felt on sticky notes, and stick them at the page you're on. Move the bookmark to record your page and "Read today". ◆ A notebook for nonfiction Write the book's words and your own thoughts with page numbers. Snap a page to read its text and add the lines you pick as the book's words. Vertical Japanese text works too. Export your notebook as text. ◆ A reading card when you finish Give stars, write one line, and stamp the card. It goes into that year's card box. Save or send the card as an image. ◆ Reading log and badges See your reading days on a calendar, your streak, and how many books you finished. Earn badges at milestones. ◆ Want-to-read list Note who recommended a book or where you saw it. ◆ iPad Works on iPad, in portrait, landscape, and Split View. — MEMORY PLUS (auto-renewable subscription) Adding books, sticky notes, notebooks, reading text from pages, reading cards and stamps, the calendar, and widgets are free for good. Memory Plus adds: ◆ Turn the lines you picked from a page into key points (uses AI) ◆ Look up a word from your notebook across all your books (free shows the number of books and the first line) ◆ Your year in books: everything you read and wrote in a year, in one place ◆ Detailed statistics: books finished per month, genres, ratings, and how books made you feel ◆ Summaries of the notes you wrote (uses AI) Pricing in the US: $39.99 per year / $3.99 per month. Prices vary by region. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically at the same price and period unless cancelled at least 24 hours before the end of the current period. Manage or cancel it in Settings › Apple Account › Subscriptions. Terms of Use (EULA): https://taniguchi-kyoichi.com/en/products/reading-memory/terms Privacy Policy: https://taniguchi-kyoichi.com/en/products/reading-memory/privacy — Sign in with Apple or Google. No ads. Feedback and bug reports: tap "Contact us" in the app's Settings.

Screenshots

読書カレンダー4 screens
Reading Memory4 screens

Verdict

The call

The clearest difference is review sentiment: Reading Memory at 100% against 読書カレンダー's 67%. 読書カレンダー's advantage is update cadence (every 10 days vs every 2 months) and iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and monetization model 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. 読書カレンダー sells 4 in-app purchases, starting at $1.99 per month and Reading Memory sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

読書カレンダー ships an update every 10 days, Reading Memory every 2 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 5 level
読書カレンダー versus Reading Memory: the parameters behind the verdict, then further details
Parameter読書カレンダーReading Memory
PriceFreeFree
Positive reviews66.7% of reviews100.0% of reviews — better
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better26.0
Further details — not scored
Size54 MB48 MB
Age rating4+4+
DeveloperManabu TsuTsuiKyoichi Taniguchi

Customer experience

読書カレンダー

Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

Reading Memory

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

読書カレンダー

Subscriptions2
  • 月額サブスクリプション7 Days trial$1.991 Month
  • 年割サブスクリプション7 Days trial$22.991 Year
One-time2
  • 買い切りプラン(24時間限定)$14.99
  • 買い切りプラン$29.99
2 purchases

Reading Memory

Subscriptions2
  • メモリープラス月額プラン$3.991 Month
  • メモリープラス年額プラン$39.991 Year

Questions

Is 読書カレンダー free?
読書カレンダー is free to download, with in-app purchases available.
Is Reading Memory free?
Reading Memory is free to download, with in-app purchases available.
Do 読書カレンダー or Reading Memory have ads?
Neither 読書カレンダー nor Reading Memory shows ads.
Which is updated more often, 読書カレンダー or Reading Memory?
読書カレンダー ships an update every 10 days, and Reading Memory every 2 months. Most recently, 読書カレンダー was updated on November 6, 2026 and Reading Memory on November 5, 2026.

Other comparisons