BookDiary vs 栞灯
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BookDiary
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A private reading journal for readers who’d rather not share. Snap a page to save the line that stayed with you, watch your reading days quietly fill a calendar, and keep every book on a shelf that’s yours alone. No accounts. No social feed. ◆ FEATURES Five tabs: Shelf, Reading, To Read, Quotes and Records Read from a photo: snap a page and the text becomes your quote. Snap the cover to fill in title and author. Text recognition runs on your device. Reading calendar: days you added a book, logged a page, or saved a quote are marked Monthly wrap: books finished, pages, reading days and a line from the month, on one card A line for today: one of your saved quotes as a notification at the time you choose (optional) First reads and rereads logged separately, so you can see how a book changes with you Quote cards: save or share a passage as a washi-paper image Reading progress: log today’s page and watch the bar fill Personal reading awards: book of the year, most moving, most reread and more Draw a book: can’t decide what’s next? Draw one from your TBR pile Beautiful covers without photos: nine genres, each with its own washi-paper design. Using a photo? Pinch and drag to fit it to the frame. ◆ WHO IT’S FOR Readers who want to read without other people’s ratings Commonplace-book keepers moving from paper to phone Rereaders who return to favorite books over the years Anyone with a tall TBR pile Lovers of dark academia and quiet design People who avoid apps that require an account ◆ PRIVACY No account required Your books, quotes and notes are stored on your device only and never sent to a server Photo text recognition happens on-device No barcode lookups or external book services No tracking, no analytics on your reading To introduce our other apps, the app may load public App Store information (app names and icons). Your records are never sent. ◆ PRICING, PLAINLY BookDiary is free to use. The free version includes: Up to 50 books Up to 3 quotes per book and 3 photos per reading log 2 personal award categories Up to 5 entries per My Data category 5 photo text scans Washi quote cards in square format Reading calendar for the current month; monthly wrap viewable in the app The Sumi shelf theme in cover view Introductions to our other apps
栞灯
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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。
Screenshots
Verdict
The clearest difference is in-app purchases: 栞灯 at none against BookDiary's 1. 栞灯 also leads on iOS requirement (15.0 vs 17.0). BookDiary's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and device support 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
Both are free to download. BookDiary sells 1 one-off in-app purchase. 栞灯 asks for nothing beyond the download.
BookDiary ships an update every 2 weeks, 栞灯 every 2 months. Both last shipped on October 24, 2026.
| Parameter | BookDiary | 栞灯 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | torankirite | ココロAI合同会社 |
In-app purchases
BookDiary
- Premium$3.99
栞灯
No in-app purchases









