# Document Reader & PDF Tools vs AI Notes

The clearest difference is iOS requirement: Document Reader & PDF Tools at 13.0 against AI Notes's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 11, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Document Reader & PDF Tools | AI Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Monthly | Monthly |
| Size | 55 MB | 57 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vu Quang Tuan](https://appshunter.io/developer/1894784824) | [Thu Bui Thi Minh](https://appshunter.io/developer/1883022832) |

## What reviewers say

### 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


### AI Notes

[App page](https://appshunter.io/ios/app/ai-notes-smart-writing/id6764526948)

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

**In-app purchases:** none


## Frequently asked questions

### Is Document Reader & PDF Tools free?

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

### Is AI Notes free?

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

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

Both Document Reader & PDF Tools and AI Notes show ads.

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

Document Reader & PDF Tools ships an update monthly, and AI Notes monthly. Most recently, Document Reader & PDF Tools was updated on September 11, 2026 and AI Notes on September 16, 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.*