BookBubble vs CozyShelf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BookBubble
This app provides a spoiler-free wiki for books, unlocking information chapter by chapter as you read. It also helps you track reading sessions, organize your library, and set reading goals to build a consistent habit.
- Spoiler-free fan wiki
- Chapter-by-chapter entry unlocking
- Reading session tracking
- Ambient reading music
- Customizable book library
- Reading goal setting
- Calendar view of reading habits
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That moment when a quick online search about a character spoils the whole plot of your book. That pain is why we built BookBubble. A fan-powered and spoiler-free Wiki that only unlocks, what you’ve actually read so far. A FAN WIKI THAT CAN'T SPOIL YOU - Look up any character, creature, location, item, or group in your book and only see what you've actually read so far. - Entries unlock chapter by chapter as you read - No more accidentally spoiling yourself while searching online - Contribute while reading and become part of the wiki READING SESSIONS - Track every session you spend in a book. - Log minutes read and chapters finished - Play ambient music while you read - Build a clear picture of your reading habit over time YOUR LIBRARY, YOUR WAY - Organize your books exactly how you read them. - Default Shelves for Currently Reading, TBR, DNF, and Finished - Create and add your own custom collections - Share or hide your shelves on your public profile CALENDAR & READING GOAL - See your reading habit take shape. - A built-in calendar shows exactly which day you read which book - Watch your reading time grow as time goes by - Set a yearly reading goal and track your progress toward it - Set notifications to make reading a habit Built for readers of fantasy, romantasy, and any book with worldbuilding too rich to hold in your head. Download BookBubble and dive into your books, chapter by chapter — spoiler-free.
CozyShelf
Track your reading progress, log your feelings about books, and discover your next read with curated ambiences. Organize your library, set reading goals, and visualize your year in books.
- Series tracking with reading order
- Blind Date with TBR feature
- Mood and feeling logging
- Customizable reading ambiences
- Import from Goodreads, StoryGraph, Kobo
- Reading stats and calendar
- Pro features: custom shelves, reading timer
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Your book hangover has a home now. You didn't just read it. You lived in it. CozyShelf is for that reader: the one who finishes a series at 2am and immediately needs the next book. Who has strong opinions about fictional characters and zero apologies about it. NEVER LOSE YOUR PLACE IN A SERIES Add the first book and CozyShelf offers the rest of the series in reading order, straight to your TBR. Your Series shows how far you are into every saga at once and what comes next, including books that aren't out yet. OUT OF YOUR READING SLUMP Can't decide what to read? Blind Date with your TBR asks how you want to feel tonight and hands you a wrapped book from your own shelf. Your first date is free. LOG THE FEELING, NOT JUST THE BOOK Write journal entries mid-chapter. Tag the mood, mark the page, and save the exact moment an author wrecked you. Before you start, set your expectations from "Low bar" to "Slump incoming," then see if the book delivered. SET THE MOOD Eight ambiences, all free: Classic, Romantasy, Cottage Core, Enchanted Library, Winter Reading Room, Cozy Halloween and Dark Academia, Silver Ash. Fairy lights, falling snow and butterflies included. TRACK WITHOUT THE PRESSURE Reading, TBR, Finished and DNF. Scan a barcode or search to add a book. Bring your library over from Goodreads, StoryGraph or Kobo in a minute. Stats and your reading calendar are free. YOUR YEAR IN STARS With CozyShelf Pro, your year becomes a constellation and a stained glass wheel of everything you felt. Pro also adds custom shelves, three Blind Dates a night, the reading timer, habits and book colors. Built by a mood reader, for mood readers, fantasy devotees and romantasy obsessives. CozyShelf. For every book that ruined you. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: BookBubble at none against CozyShelf's 2. BookBubble also leads on review sentiment (100% vs 75%). CozyShelf's advantage is update cadence (every 3 days vs monthly). 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. CozyShelf sells 2 in-app purchases, starting at $4.99 per month. BookBubble asks for nothing beyond the download.
BookBubble ships an update monthly, CozyShelf every 3 days. Both last shipped on November 5, 2026.
| Parameter | BookBubble | CozyShelf |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (7 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 75.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Monthly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 60 MB | 13 MB |
| Age rating | 17+ | 9+ |
| Developer | Timon Grassl | Joanna Leslie |
Customer experience
BookBubble
CozyShelf
In-app purchases
BookBubble
No in-app purchases
CozyShelf
- Pro Monthly: Shelves & Stats$4.991 Month
- Pro Annual: Shelves & Stats1 Year trial$34.991 Year









