# ChatPDF AI vs Notes AI Note Taker, Summary

The clearest difference is update cadence: ChatPDF AI at every 3 days against Notes AI Note Taker, Summary's every 6 weeks. ChatPDF AI also leads on iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChatPDF AI sells 4 in-app purchases, starting at $3.99 per 7 days and Notes AI Note Taker, Summary sells 1 in-app purchase, starting at $14.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ChatPDF AI ships an update every 3 days, Notes AI Note Taker, Summary every 6 weeks. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ChatPDF AI | Notes AI Note Taker, Summary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chatpdf-ai-chat-and-pdf-summary/id6744906438/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 65 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Deploy Global OU](https://appshunter.io/developer/1783394589) | [CAPPINATION LIMITED](https://appshunter.io/developer/1885467758) |

## What reviewers say

### ChatPDF AI

[App page](https://appshunter.io/ios/app/chatpdf-ai-chat-and-pdf-summary/id6744906438)

This AI-powered tool allows you to interact with your documents. Upload PDFs, DOCX, or TXT files and ask questions, get summaries, or receive help with homework. It transforms static files into searchable conversations for quick information retrieval.

**Highlights:** Chat with any document (PDF, DOCX, TXT, EPUB), Summarize pages or entire files, Homework help and essay writing assistance, Supports large files and multiple languages, Instant search for quick answers

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocChatAI - PRO | $3.99 | per 7 days |
| Weekly Trial | $4.99 | per 7 days |
| DocChatAI - PRO | $9.99 | per month |
| DocChatAI - PRO | $39.99 | per year |


### Notes AI Note Taker, Summary

[App page](https://appshunter.io/ios/app/notes-ai-note-taker-summary/id6761368805)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $14.99 | per 7 days |


## Frequently asked questions

### Is ChatPDF AI free?

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

### Is Notes AI Note Taker, Summary free?

Notes AI Note Taker, Summary is free to download, with in-app purchases available.

### Do ChatPDF AI or Notes AI Note Taker, Summary have ads?

Both ChatPDF AI and Notes AI Note Taker, Summary show ads.

### Which is updated more often, ChatPDF AI or Notes AI Note Taker, Summary?

ChatPDF AI ships an update every 3 days, and Notes AI Note Taker, Summary every 6 weeks. Most recently, ChatPDF AI was updated on October 6, 2026 and Notes AI Note Taker, Summary on October 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.*