Comparison

栞灯 vs Book Memo

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

Head to head
About

栞灯

Features
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積んでる本も、大切な読書。 本との関係すべてを肯定して残す、読書ノートアプリです。 ◆ 積読も、読みかけも、ぜんぶ残せる 「気になる」「積んでる」「読んでいる」「寝かせてる」「読み終えた」の5つのステータス。 読み終わらなくても、いいんです。積んである本もあなたの本棚の一部として、罪悪感なく記録できます。 ◆ 感想は、すきなかたちで ひとことだけ残してもいいし、じっくり長く書いてもいい。「胸がざわついた」「癒された」などの気分タグを選ぶだけでもOK。じぶんだけのタグも作れます。ネタバレOKの自分用メモも別に残せます。 ◆ 月末のお楽しみ「私の灯」 今月出会った気持ちが、色とりどりの灯りになって浮かびます。冊数ではなく、気持ちでふりかえる新しい読書記録です。 ◆ シェアは、したいときだけ 表紙と感想をきれいなカード画像にして、SNSでシェアできます。もちろん自分だけの静かな記録として使うのも素敵です。 ◆ 本の登録はかんたん 題名で検索して、表紙つきでさっと追加。手動登録もできます。 ◆ 安心して使えます ・アカウント登録不要。データはすべて端末の中に保存されます ・バックアップ機能つき(ファイルに書き出して復元できます) ・無料(バナー広告が表示されます) 積読タワーが育ちがちな人、感想を書くのが苦手な人、本屋が好きな人へ。 あなたの読書のかたちに、そっと灯をともします。

About

Book Memo

Features
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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

栞灯4 screens
Book Memo4 screens

Verdict

The call

The clearest difference is ads: Book Memo at none against 栞灯's shown. Book Memo also leads on update cadence (every 2 weeks vs every 2 months). 栞灯's advantage is device support (3 vs 1). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

栞灯 ships an update every 2 months, Book Memo every 2 weeks. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
栞灯 versus Book Memo: the parameters behind the verdict, then further details
Parameter栞灯Book Memo
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size12 MB36 MB
Age rating4+4+
DeveloperKOKORO AI LIMITED LIABILITY COMPANYYuki Tagami

In-app purchases

None

栞灯

No in-app purchases

None

Book Memo

No in-app purchases

Questions

Is 栞灯 free?
栞灯 is free to download, with no in-app purchases.
Is Book Memo free?
Book Memo is free to download, with no in-app purchases.
Do 栞灯 or Book Memo have ads?
栞灯 shows ads; Book Memo does not.
Which is updated more often, 栞灯 or Book Memo?
栞灯 ships an update every 2 months, and Book Memo every 2 weeks. Most recently, 栞灯 was updated on October 29, 2026 and Book Memo on October 31, 2026.

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