# Infinite Library vs BookDaddy

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.

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.

## The numbers

| Metric | Infinite Library | BookDaddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (41 ratings)](https://appshunter.io/ios/app/infinite-libraryai-book-maker/id6742030152/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 25 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Thomas A.Q.T. Truong](https://appshunter.io/developer/1565815544) | [Deal.ai](https://appshunter.io/developer/1779155424) |

## What reviewers say

### Infinite Library

[App page](https://appshunter.io/ios/app/infinite-libraryai-book-maker/id6742030152)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spark (5K Words) | $44.99 | one-time |
| Wordsmith (20K Words) | $142.99 | one-time |
| Author Pro (50K Words) | $284.99 | one-time |
| Bestseller (100K Words) | $464.99 | one-time |


### BookDaddy

[App page](https://appshunter.io/ios/app/bookdaddy/id6744160868)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Infinite Library free?

Infinite Library is free to download, with in-app purchases available.

### Is BookDaddy free?

BookDaddy is free to download, with no in-app purchases.

### Do Infinite Library or BookDaddy have ads?

Neither Infinite Library nor BookDaddy shows ads.

### Which is updated more often, Infinite Library or BookDaddy?

Infinite Library ships an update every 8 days, and BookDaddy fortnightly. Most recently, Infinite Library was updated on October 25, 2026 and BookDaddy on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*