BookBook vs KRIZ
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
BookBook
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How many books have you finished? What's next on your list? Which day do you read the most? BookBook brings your library, goals, and reading habit together in one beautiful app β and your data never leaves your device. No account. No ads. No tracking. Just you and your books. YOUR LIBRARY IN YOUR POCKET β’ Scan the barcode (ISBN) on the back cover and add a book in seconds β’ Search millions of titles by name or author β covers load automatically β’ Organize series and reading lists, track purchases and spending GOALS & STREAKS β’ Set daily page and yearly book goals, watch your progress on elegant rings β’ Protect your reading streak, with an optional daily reminder β’ "At this pace, how many books will you finish this year?" β stay ahead with pace projection STATS THAT SURPRISE YOU β’ Your weekly rhythm: which day do you read the most? β’ Genre breakdown, author rankings, fastest and slowest finishes β’ Book length profile, publication eras, ratings by genre β’ Turn your month or year into a gorgeous shareable summary card NOTES & QUOTES β’ Capture page-linked notes and quotes, mark your favorites β’ Turn quotes into share-ready cards with 5 stunning themes WIDGETS β’ Home screen widgets for your daily goal + streak and the book you're reading β’ Lock screen widgets keep your progress in sight β’ Choose which book each widget shows MADE YOURS β’ 8 accent themes β including "Match my book," which colors the app after your current book's cover β’ 4 alternate app icons, light & dark mode, localized in 9 languages YOUR DATA, SAFE β’ Automatic iCloud backup: last 5 daily backups, one-tap restore β’ Easy migration from Goodreads, StoryGraph, and Bookmory; export as CSV or backup file β’ Everything stays on your device β we don't even have a server BOOKBOOK PREMIUM Unlimited books and notes, advanced statistics, past-period reports, exclusive accent themes, premium card themes, and alternate icons. Subscriptions are billed to your Apple ID, renew automatically unless canceled at least 24 hours before the period ends, and can be managed in Settings > Subscriptions. Terms of Use: https://gulac.github.io/TUPPs/BookBook/IOS/terms_of_use_en.html Privacy Policy: https://gulac.github.io/TUPPs/BookBook/IOS/privacy_policy_en.html Reading is already wonderful β BookBook turns it into a habit. Add your first book today.
KRIZ
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KRIZ is a reading diary, not another book catalogue. A catalogue answers βwhat have I readβ. A diary answers βwhat happened to me while I was reading itβ. KRIZ is about the second one. Three sections instead of lists Past, present, future. A book lives through them in turn, as it should. A diary you assemble yourself Quotes, thoughts, questions, observations, characters, things to explore after the book. Switch on only the blocks you need β the rest stays out of the way. Nothing is required: marking a book as finished is enough. Search your own words Remember the quote but not the book? A few words will find it. A book is added in a second By title, by author, or by scanning the barcode on the cover. What to read next The randomiser picks from the books you saved, from your shelf, or offers something new β from a selection of two thousand books with covers, descriptions and readersβ ratings. Cards for stories Eight ready-made looks. You tick what to show β cover, quote, rating, dates β and the app composes the card. Month summaries How much you read, what you liked most, which book turned out the longest. A fortune for the day One short line β a reason to open the diary even on a busy day. Import from Goodreads and StoryGraph Ratings, reviews, dates and shelves come across with the books. Free forever The whole diary: any number of books, entries and shelves. Search through your own words, barcode scanner, sync between devices, import, light and dark themes, story cards. What came free stays free. The KRIZ subscription adds Quote scanner: photograph a page, the text is recognised and you can fix it before saving. Voice notes. Photos for a book. Ambient sounds: rain, a library, a cafΓ©. Every card template and extra appearances. The first seven days are free. Your entries are yours The diary lives on your phone and works offline. An account is only for syncing between devices β and it is optional. Backups are saved as an ordinary file. Ukrainian, Russian, English, Greek.
Screenshots
Verdict
The clearest difference is in-app purchases: KRIZ at none against BookBook's 2. KRIZ also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. BookBook sells 2 in-app purchases, starting at $3.99 per month. KRIZ asks for nothing beyond the download.
BookBook ships an update every 3 weeks, KRIZ fortnightly. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.
| Parameter | BookBook | KRIZ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Fortnightly β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 15.1 β better |
| Further details β not scored | ||
| Size | 48 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | UZEYIR GULAC | Kateryna Dimitrashko |
In-app purchases
BookBook
- BookBook Premium β Monthly$3.991 Month
- BookBook Premium - Yearly7 Days trial$29.991 Year
KRIZ
No in-app purchases









