Comparison

Book Diary vs Rera

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

Head to head
About

Book Diary

Features
Read full description

Description Your reading life, beautifully organized. Whether you're a casual reader or a bookworm, this app helps you track every book, capture your thoughts, and never forget what you've read. TRACK YOUR LIBRARY • Organize books by status: Currently Reading, Want to Read, Finished, or Abandoned • Search and add books instantly with cover art and details • See your reading journey at a glance JOURNAL YOUR THOUGHTS • Write notes and reflections for each book • Capture quotes, ideas, and moments that moved you • Build a personal archive of your reading history AI-POWERED INSIGHTS • Get smart suggestions and insights about your reading • Discover connections between the books you love BEAUTIFULLY DESIGNED • Clean, intuitive interface that stays out of your way • Elegant visuals that make tracking books a pleasure Your next great read is waiting. Start your reading journal today. Terms of Use: https://vadbeg.github.io/book-ai-journal/terms-of-use/ Privacy Policy: https://vadbeg.github.io/book-ai-journal/privacy-policy/

About

Rera

Features
Read full description

Rera is not an app for counting the books you have read, or for lining them up neatly on a shelf. It is for people looking for an app to wrestle with a book and make it part of themselves. Rera is a reading journal for keeping the traces you leave when you face a single book. Underline a line, copy out a passage that caught you, scribble what you felt in the margin. The things people used to do in a paper notebook, kept here as they are. Counting the books on your shelf does not keep what you felt in that moment. What Rera cares about is not the number of books or a completion rate, but your own heart at the moment you wrestled with a book. [What you can do] - Take a photo of a cover or a page - Trace the text in the photo with your finger and highlight it on the spot - Write down your thoughts, your objections, your quotes as notes - Your traces are quietly bound together, one book at a time [The lines you drew gather together] The words you highlight gently collect on that book's page. When you look back later, only the places where your heart moved remain, resting as quotes in sepia ink. Not to paint over and be done, but to savor again. [In the end, a book of your own] Your traces can be typeset vertically or horizontally and exported as a single PDF. Not the number of books you read, but a private book of the self that passed through them. [A quiet place] Your photos and notes are stored only on your device. No ads, no rankings, no comparison with others. A quiet place to face a book alone. Available in Japanese, English, and Chinese. To read is not to memorize, but to change. Bind the fragments of that change into Rera.

Screenshots

Book Diary3 screens
Rera4 screens

Verdict

The call

The clearest difference is in-app purchases: Rera at none against Book Diary's 1. Book Diary's advantage is update cadence (every 2 days vs every 5 months). On price, ads, device support and iOS requirement 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. Book Diary sells 1 in-app purchase, starting at $3.99 per month. Rera asks for nothing beyond the download.

UpkeepUpdate frequency

Book Diary ships an update every 2 days, Rera every 5 months. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 4 level
Book Diary versus Rera: the parameters behind the verdict, then further details
ParameterBook DiaryRera
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.0
Further details — not scored
Size2 MB9 MB
Age rating4+4+
DeveloperVADZIM TSITKODaisaku Seto

In-app purchases

1 purchases

Book Diary

Subscriptions1
  • Premium Monthly$3.991 Month
None

Rera

No in-app purchases

Questions

Is Book Diary free?
Book Diary is free to download, with in-app purchases available.
Is Rera free?
Rera is free to download, with no in-app purchases.
Do Book Diary or Rera have ads?
Neither Book Diary nor Rera shows ads.
Which is updated more often, Book Diary or Rera?
Book Diary ships an update every 2 days, and Rera every 5 months. Most recently, Book Diary was updated on October 31, 2026 and Rera on November 10, 2026.

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