Infinite Library vs BookDaddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Infinite Library
This AI-powered tool transforms your ideas into complete, publish-ready books in minutes. It offers an interview-style writing process, supports over 100 languages, and can even convert YouTube videos into manuscripts. You retain full rights and royalties.
- AI ghostwriter for book creation
- Generate up to 100,000 words
- Interview-style question and answer writing
- Supports 100+ languages
- Convert YouTube videos to books
- Upload and adapt to your content
- One-tap Amazon publishing
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Infinite Library is where books get written, read, and held. WRITE — THE BINDERY STUDIO Tell the editor your idea and it writes and typesets a complete, print-ready book with you — real pages, a designed cover, yours to own. Watch it draft chapter by chapter, answer its questions, ask for changes in plain language, and rewind to any earlier version. Start from a sentence, a pile of notes, a manuscript, or a YouTube link. On iPad and Mac the live typeset proof sits beside the conversation. Free to start, no account required. READ — THE WHOLE LIBRARY Thousands of books by real people, browsable by shelf and searchable, in a reader made for reading: paper, sepia and night pages, your type size, and your place remembered — pick up where you left off from the Continue reading shelf. Hide any book, block any author, and report anything that shouldn't be there. Follow an author from any book's page, and their next book finds your inbox. HOLD — REAL PAPERBACKS Order the printed edition of any book on the print shelf — including your own — with a live shipping quote, then follow it to your door from Account. LISTEN Albums written from books, audiobook samples, and the audiobooks you own — with lock-screen controls and playback speed. Narrate your own book and watch it record itself, chapter by chapter, live on your Lock Screen and in the Dynamic Island. YOUR ACCOUNT Sign in with a one-time email code — no password to remember. See your orders, earnings from your published books, invite links and notifications, download the proof, print-ready PDF, EPUB and Word files of your books, and get help from a live assistant that knows your account. Used Infinite Library before? Same email, same account. Infinite Library is free to use. Bindery membership and AI credits are optional. Terms of Use: https://www.infinitelibrary.ai/terms Privacy Policy: https://www.infinitelibrary.ai/privacy
BookDaddy
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BookDaddy.ai uses advanced AI to help you write, publish, and market your book—faster and easier than ever before. Whether you're a first-time author or an experienced writer, our tools guide you through the entire process, from draft to bestseller.
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Verdict
The clearest difference is in-app purchases: BookDaddy at none against Infinite Library's 4. BookDaddy also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support 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. Infinite Library sells 4 one-off in-app purchases. BookDaddy asks for nothing beyond the download.
Infinite Library ships an update every 8 days, BookDaddy fortnightly. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.
| Parameter | Infinite Library | BookDaddy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (41 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 41 — better | — |
| Update frequency | Every 8 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 12 MB | 25 MB |
| Age rating | 12+ | 4+ |
| Developer | Thomas A.Q.T. Truong | Deal.ai |
In-app purchases
Infinite Library
- Spark (5K Words)$44.99
- Wordsmith (20K Words)$142.99
- Author Pro (50K Words)$284.99
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- Bestseller (100K Words)$464.99
BookDaddy
No in-app purchases
Questions
Is Infinite Library free?
Is BookDaddy free?
Do Infinite Library or BookDaddy have ads?
Which is updated more often, Infinite Library or BookDaddy?
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