Readlogger vs Shelfieline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Readlogger
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Biblion helps you record books you've read and manage action declarations inspired by your reading. Key Features: ・Library: Add books, write notes, rate them, and track reading dates ・Tasks: Register up to 4 action declarations from your reading and log daily completion ・Home: View your reading stats at a glance (books read, total reading time) ・Weekly Stats: Review your task completion rate week by week Terms of Service: https://it-master.jp/biblion/terms-en.html
Shelfieline
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Your private study, in your pocket. Shelfieline is an iPhone / iPad app that turns reading from a list-management chore into a personal experience. We've recreated a real bookshelf in digital form — spine textures, varying book heights, the heft of the shelf itself. The dark, "private den" aesthetic is built for readers who care about how their library looks. ▼ Key Features 【Study】Your bookshelves side by side. Swipe to switch; neighboring shelves peek in from both sides. On iPad the shelves fill the screen. 【Bookshelf】Your books as realistic spines. Pinch to zoom and the rows rearrange themselves. Paper, cloth and leather textures with letterpress-style titles. Long-press a book to lift it and drag it into place. 【Adding Books】 ・Scan an ISBN barcode (fills in the title, author and page count) ・Continuous scan: scan book after book, then shelve them all at once. Books you already own are flagged ・Enter the title and author by hand ・Share a cover image from Safari and assign it to a book Cover images come only from your camera or your photo library — the choice is always yours. 【Search】 ・Search every shelf by title, author, or the text of your notes ・Filter by status: want to read / reading / finished / stockpile 【Reading Status】 ・Four states, page progress for books in progress, 5-star ratings for finished books ・Start and finish dates 【Reading Stats】 ・Books and pages finished per year, with a month-by-month chart ・A yearly goal, and a breakdown by status 【Reading Diary】 ・Multiple notes per book, grouped by month ・Optional photo attachment 【Shelf Memo & Reading History】 ・A memo and photos for each shelf ・A bank-passbook-style timeline of books added, started, finished and noted 【Share Shelfie!】 ・Turn a shelf into an image of your study and post it ・Preview before sharing; choose 9:16, 4:5 or 1:1 ・Or make an image of the books you read this year 【Flat View & Organize Mode】 ・Switch between spines and a grid of covers ・Select several books and move them to another shelf at once 【Export & Backup】 ・Export your book list as CSV ・Create a backup that includes covers, notes and shelf memo photos, and restore from it 【Shelf Materials & Wallpapers (Pro)】 ・6 shelf materials: Walnut, Ebony (free) + Oak, Maple, Teak, Mahogany (Pro) ・5 wallpapers: Plain (free) + Linen, Wood Panel, Dark Concrete, Leather (Pro) 【Widgets (Pro)】 ・Library size and books finished ・A shelf widget showing your actual spines ・The book you're reading and how far you are (also on the Lock Screen) ▼ Privacy ・Your books, notes and photos stay on your device. No account, no email collected ・No user tracking, no ads ・To improve the app, only anonymous usage counts that cannot identify you are sent ・Cover images come only from your camera or photo library ・Book information is looked up through the official openBD, National Diet Library Search and Open Library APIs ▼ Plans ・Free: up to 3 bookshelves and 30 books. Search, stats, sharing, backup and the rest are all included ・Pro Plan (one-time purchase): unlimited shelves and books + 4 shelf materials + 4 wallpapers + widgets ▼ Requirements iOS 17 or later, iPhone or iPad. --- YOU ARE WHAT YOU READ.
Screenshots
Verdict
The clearest difference is ads: Shelfieline at none against Readlogger's shown. On price, update cadence, in-app purchases 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. Readlogger sells 3 in-app purchases, starting at $2.99 per month and Shelfieline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.
| Parameter | Readlogger | Shelfieline |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | Every 2 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 5 MB |
| Age rating | 17+ | 4+ |
| Developer | Koji Isano | Takayuki Hamuro |
In-app purchases
Readlogger
- Basic Plan$2.991 Month
- Premium Plan$5.991 Month
- 45 Tickets$9.99
Shelfieline
- Shelfieline Pro Unlock$9.99









