Cosy Case vs OnlyBooks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cosy Case
Create a visually appealing digital bookshelf to organize your reading. Earn rewards for reading milestones and customize your shelves with decorations. Track your progress, log reviews, and share your collection with friends.
- Build a digital bookshelf with real book spines
- Import books by scanning spines or using AI
- Earn badges and decorations for reading milestones
- Log reads, reviews, and ratings
- Set reading goals and track progress
- Share your collection with friends
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Cosy Case: Your Digital Book Case Welcome to Cosy Case — the book tracking app that's actually fun. Build a beautiful digital bookshelf, decorate it your way, and show off your reading life in style. • Real book spines, not just covers — Add the books you love and watch them appear as real spine images on your shelf. Snap a photo of one spine, scan your whole bookshelf to import books automatically, or create your own spines with AI. • Reading that feels like a game — Earn badges for reading milestones and collect cozy decorations: plants, candles, and bookends. Unlock new bookcase styles and make every shelf uniquely yours. • Track everything in one place — Log your reads, reviews, and ratings, set reading goals, and watch your collection grow on a shelf you can add right to your home screen. • Share your shelf — Show off your collection with friends and explore what they're reading, all from a digital bookshelf worth keeping. Rated 4.7 out of 5 by readers who love a shelf as much as the stories on it. Join 5000+ readers Download Cosy Case free today and start building your dream bookshelf. Buttons are an optional in-app currency used to unlock cosmetic items — new bookcase styles, backgrounds, and cozy decorations like plants, candles, and bookends. No purchase is required to track books or use core features. Cosy Case Pro (optional subscription): Upgrade for expanded monthly limits — 30 custom spine creations and 10 bookshelf scans per month. Cosy Case Pro is an auto-renewing subscription. Payment will be charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. By using this app, you agree to Apple's standard Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
OnlyBooks
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Your books deserve a better home than a spreadsheet. OnlyBooks turns your reading life into a beautiful virtual bookshelf — every book you own or have read, arranged as spines just like a real shelf. Add a book in seconds, watch your collection grow. A shelf that looks the part Books are rendered as spines with their real cover art and colours. Customise the wall, adjust shelf colours, and make it yours. Track what matters Log when you started and finished a book, or simply mark it as read if you can't remember the dates. Your stats page shows how many books you've read each month and how many pages you've powered through. Find any book instantly Search the Open Library catalogue of millions of titles to add books with cover art, author, year, and page count filled in automatically. Add several books at once with multi-select. Stay organised Tag books by genre, series, or anything else. Filter your shelf by tag, reading status, or month to find exactly what you're looking for. Your data, your device Everything is stored locally — no account, no cloud, no tracking. Export your entire library as a backup and import it on any device.
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Verdict
The clearest difference is in-app purchases: OnlyBooks at none against Cosy Case's 8. Cosy Case's advantage is update cadence (every 6 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
Both are free to download. Cosy Case sells 8 in-app purchases, starting at $4.99 per month. OnlyBooks asks for nothing beyond the download.
Cosy Case ships an update every 6 days, OnlyBooks every 5 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | Cosy Case | OnlyBooks |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (104 ratings) — better | — |
| Positive reviews | 56.7% of reviews | — |
| Number of ratings | 104 — better | — |
| Update frequency | Every 6 days — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 99 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Griffin Ciluffo | Devin Smith |
In-app purchases
Cosy Case
- Cosy Case Premium$4.991 Month
- Monthly Premium$4.991 Month
- Cosy Case Premium Yearly$19.991 Year
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- yearly$49.991 Year
- 300 Buttons$2.99
- 700 Buttons$5.99
- 1300 Buttons$9.99
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- Lifetime$29.99
OnlyBooks
No in-app purchases







