Creative Book Builder vs Kuarki
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Creative Book Builder
This app empowers users to create professional ebooks from scratch or existing content. It offers a wide range of layout options, powerful widgets for interactive elements, and multiple output formats including EPUB, HTML5, and PDF. Easily import content from various sources and utilize robust editing and sharing tools.
- Multiple EPUB layout options (Classic, Fixed Layout)
- Extensive widget library (Read Aloud, Quiz, Chart, etc.)
- Export to EPUB, HTML5, PDF, Audio, Photo & Video
- Import content from Blogger, WordPress, Google Docs, and cloud storage
- Direct image editing and element manipulation
- Cloud synchronization and backup features
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Creative Book Builder is a powerful, flexible, and professional ebook generation tool. No matter you create book from scratch or existing content, no matter your content is simple or complex, CBB enables you to build your own content in an efficient way. Comprehensive EPUB Generation * Create different kinds of layout for EPUB: Classic (re-flowable), Fixed Layout (WYSIWYG), Landscape, Portrait, and Square books. * All generated books should pass EPUB validation with EpubCheck and should be read in any EPUB readers. * Edit cover image and configure book information including book title, author, publisher, etc. * Change book style including font, indentation, direction (left-to-right, right-to-left or vertical text). * Add soundtrack, your own font, and custom stylesheet to the book. * Customize page size of fixed layout books. Powerful & Flexible Widgets * Besides title, paragraph, photos, videos, audio recording, markdown, and other basic elements, CBB offers a lot of powerful widgets: Read Aloud, Quiz, Slideshow, Table, Chart, Question, Equation (LaTeX), Drawing, Shapes, Checklist, Expandable Content, Screen Recording, Panorama, 360 Degree Image, QR Code, Online Image, Online Video, YouTube Video. * Popup footnotes and glossary can be defined and linked from content. * All widgets can be customizable. Multiple Output Format * Besides EPUB, CBB offers other types of output to maximize your content usage: HTML5, PDF, Audio, Photo & Video. * HTML5 books can be read in any browser on any platform without EPUB limitation, e.g. embed html code and iframe. HTML5 books can be hosted on Google Drive and exported as zip file for offline reading. Reuse Your Existing Content * Import your great content from Blogger, WordPress or RSS/Atom feed directly. * Convert your web apps generated by TouchAppCreator into books. * Specifically, Google Documents, Slides, Sheets, and Drawings can be imported into CBB as easy as possible. * Import any files from iCloud, Dropbox, Google Drive, OneDrive & FTP Server. * Smart Merge: define place holder and merge with different values. Editing Tools * Edit image directly (filters, add text, etc). * Cut, copy, and paste elements from page to page. * Lock element to avoid movement. * Find and replace string for elements. * Mark pages as draft version. * All paragraph, title, markdown & HTML elements are saved automatically. * Backup book to Dropbox automatically after generating book. * Synchronize books with iCloud. * Deleted books can be restored until the books are deleted permanently. * Navigate whole book while recording audio. * Edit two books at the same time by using multiple windows (iOS 13). Sharing Tools * Share page or whole book via iCloud, Dropbox, Google Drive, OneDrive, FTP Server & WebDAV Server. * Share book between devices via browser by using QR code. * Transfer book to desktop via iTunes File Sharing (USB without WiFi). * Batch upload your books to cloud services.
Kuarki
This interactive app takes children aged 10+ on a journey through words and worlds to expand vocabulary and practice reading/writing skills. It aims to bridge the gap between home and school languages with engaging content developed by international education experts.
- Multilingual learning
- Vocabulary expansion
- Reading and writing practice
- Interactive journeys
- Educational content
- Cross-cultural language bridging
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Kuarki - Traveller between wor(l)ds is a free interactive app for multilingual children and other foreign language learners aged 10 and over. Kuarki and his friends take your child on a journey not only through words but also through different worlds as the title of the app suggests. With the help of this app, children can expand their vocabulary and practice their reading and writing skills. The aim of the app is to contribute to closing the gap between school and home language and to provide the readers with new knowledge in an interesting and fun way. Children who want to learn a foreign language and improve their reading skills can also be supported by using the app. The fictional protagonist Kuarki leads through the different worlds (human being, earth, universe & life ) and dedicates himself to questions like "What is in the centre of the earth?" or "Why does practice make the master?". For each question he finds someone, whether an egg cell or Isaac Newton, who can answer the questions. The questions are based on frequently asked questions by children aged 10 and over. The app can combine the following languages: German, English, Russian, Turkish, Lithuanian, Slovakian, Slovenian, Croatian, Hungarian and Romanian. This results in a wide range of possible combinations to close the gap between home and school language. The appealing illustrations and contents of the app are of course not only suitable for multilingual children, but also interesting for adults who want to refresh their knowledge of foreign languages and natural sciences. Kuarki - Traveller between wor(l)ds is an app supported by Erasmus+ (EU) and is therefore safe for children and free of advertising, so the app can be used with a clear conscience at school or at home. Our content has been developed by international education experts and meets the highest educational standards in Europe.
Screenshots
Verdict
The clearest difference is price: Kuarki at Free against Creative Book Builder's $5.99. Kuarki also leads on review sentiment (100% vs 62%) and update cadence (weekly vs every 3 months). Creative Book Builder's advantage is device support (4 vs 1). On ads and in-app purchases 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
Kuarki is free to download; Creative Book Builder costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Creative Book Builder ships an update every 3 months, Kuarki weekly. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.
| Parameter | Creative Book Builder | Kuarki |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 3.9 (16 ratings) — better | — |
| Positive reviews | 62.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 16 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPad |
| Requires iOS | 15.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 191 MB |
| Age rating | 4+ | 4+ |
| Developer | Tiger Ng | Studio Gaus GmbH |
Customer experience
Creative Book Builder
Kuarki
In-app purchases
Creative Book Builder
No in-app purchases
Kuarki
No in-app purchases
Questions
Is Creative Book Builder free?
Is Kuarki free?
Do Creative Book Builder or Kuarki have ads?
Which is updated more often, Creative Book Builder or Kuarki?
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