Comparison

BookBook vs KRIZ

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

BookBook

Features
Read full description

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.

About

KRIZ

Features
Read full description

KRIZ is a reading diary, not another book catalogue. A catalogue answers β€œwhat have I read”. A diary answers β€œwhat happened to me while I was reading it”. 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 readers’ 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

BookBook4 screens
KRIZ4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. BookBook sells 2 in-app purchases, starting at $3.99 per month. KRIZ asks for nothing beyond the download.

UpkeepUpdate frequency

BookBook ships an update every 3 weeks, KRIZ fortnightly. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

Scorecard2 real differences Β· 4 level
BookBook versus KRIZ: the parameters behind the verdict, then further details
ParameterBookBookKRIZ
PriceFreeFree
Update frequencyEvery 3 weeksFortnightly β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.1 β€” better
Further details β€” not scored
Size48 MB46 MB
Age rating4+4+
DeveloperUZEYIR GULACKateryna Dimitrashko

In-app purchases

2 purchases

BookBook

Subscriptions2
  • BookBook Premium – Monthly$3.991 Month
  • BookBook Premium - Yearly7 Days trial$29.991 Year
None

KRIZ

No in-app purchases

Questions

Is BookBook free?
BookBook is free to download, with in-app purchases available.
Is KRIZ free?
KRIZ is free to download, with no in-app purchases.
Do BookBook or KRIZ have ads?
Neither BookBook nor KRIZ shows ads.
Which is updated more often, BookBook or KRIZ?
BookBook ships an update every 3 weeks, and KRIZ fortnightly. Most recently, BookBook was updated on October 14, 2026 and KRIZ on October 4, 2026.

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