# BookDaddy vs Book writer AI

The clearest difference is in-app purchases: BookDaddy at none against Book writer AI's 8. BookDaddy also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Book writer AI sells 8 in-app purchases, starting at $4.99 per 7 days. BookDaddy asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | BookDaddy | Book writer AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (44 ratings)](https://appshunter.io/ios/app/book-writer-ai/id6759101552/reviews)** |
| Number of ratings | — | **44** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 77 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Deal.ai](https://appshunter.io/developer/1779155424) | [Matteo Giannessi](https://appshunter.io/developer/1841376781) |

## What reviewers say

### BookDaddy

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

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

**In-app purchases:** none


### Book writer AI

[App page](https://appshunter.io/ios/app/book-writer-ai/id6759101552)

This AI-powered tool helps you write books, novels, and stories with speed and creativity. It generates chapters, expands text, and turns simple prompts into full book content, making the writing process easier for all skill levels.

**Highlights:** AI book writing engine, Generate chapters, scenes, and ideas, Expand and rewrite text, Turn prompts into book content, Organize chapters and scenes, Secure cloud storage

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Book Writer AI weekly plan | $4.99 | per 7 days |
| Book writer AI | $14.99 | per month |
| Book Writer AI monthly plan | $17.99 | per month |
| Book writer AI | $49.99 | per month |
| Book Writer AI yearly plan | $99.99 | per year |
| Book writer AI | $149.99 | per year |
| Book writer AI: Ultra annual plan | $499.99 | per year |
| usage_credit_pack | $9.99 | one-time |


## Frequently asked questions

### Is BookDaddy free?

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

### Is Book writer AI free?

Book writer AI is free to download, with in-app purchases available.

### Do BookDaddy or Book writer AI have ads?

Book writer AI shows ads; BookDaddy does not.

### Which is updated more often, BookDaddy or Book writer AI?

BookDaddy ships an update fortnightly, and Book writer AI fortnightly. Most recently, BookDaddy was updated on October 28, 2026 and Book writer AI on October 31, 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.*