# AI Guide Book vs Document Reader & PDF Tools

The clearest difference is update cadence: AI Guide Book at every 3 days against Document Reader & PDF Tools's monthly. Document Reader & PDF Tools's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AI Guide Book ships an update every 3 days, Document Reader & PDF Tools monthly. Both last shipped on November 9, 2026.

## The numbers

| Metric | AI Guide Book | Document Reader & PDF Tools |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Monthly |
| Size | 96 MB | 55 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NEXTLINK PTY LTD](https://appshunter.io/developer/1115197533) | [Vu Quang Tuan](https://appshunter.io/developer/1894784824) |

## What reviewers say

### AI Guide Book

[App page](https://appshunter.io/ios/app/ai-guide-book-ai-literacy/id6754091559)

**Features:** macOS Compatibility

**In-app purchases:** none


### Document Reader & PDF Tools

[App page](https://appshunter.io/ios/app/document-reader-and-pdf-tools/id6762595313)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI Guide Book free?

AI Guide Book is free to download, with no in-app purchases.

### Is Document Reader & PDF Tools free?

Document Reader & PDF Tools is free to download, with no in-app purchases.

### Do AI Guide Book or Document Reader & PDF Tools have ads?

Both AI Guide Book and Document Reader & PDF Tools show ads.

### Which is updated more often, AI Guide Book or Document Reader & PDF Tools?

AI Guide Book ships an update every 3 days, and Document Reader & PDF Tools monthly. Most recently, AI Guide Book was updated on November 9, 2026 and Document Reader & PDF Tools on November 9, 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.*