# Note Taking AI vs ChatPDF

The clearest difference is in-app purchases: ChatPDF at none against Note Taking AI's 9. ChatPDF also leads on ads (none vs shown). Note Taking AI's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (13.0 vs 17.0). On price, review sentiment and device support there is nothing between them.

Both are free to download. Note Taking AI sells 9 in-app purchases, starting at $4.99 per 7 days. ChatPDF asks for nothing beyond the download.

Note Taking AI ships an update every 4 days, ChatPDF every 3 weeks. The most recent releases landed on September 16, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | Note Taking AI | ChatPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.2 (5 ratings)](https://appshunter.io/ios/app/chatpdf-ai-chat-with-pdf-doc/id6743073426/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 141 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TOMODEV TECHNOLOGY JOINT STOCK COMPANY](https://appshunter.io/developer/1773503295) | [NextPixel apps](https://appshunter.io/developer/1584487280) |

## What reviewers say

### Note Taking AI

[App page](https://appshunter.io/ios/app/note-taking-ai-notebook/id6742019028)

This app uses AI to transcribe audio, summarize text from various sources like images and documents, and create study aids like flashcards and quizzes. It also offers an AI chat assistant and multilingual translation to enhance learning and productivity.

**Highlights:** AI-powered transcription and summarization, Text extraction from images and documents, YouTube video summarization, Custom quiz and flashcard generation, Multilingual translation, Interactive AI chat assistant, Flexible sharing and export options

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly 3-day Trial Onboarding | $5.99 | per 7 days |
| Weekly 3-day Trial In App | $5.99 | per 7 days |
| Monthly | $9.99 | per month |
| TNote Yearly Onboarding | $29.99 | per year |
| TNote Yearly In App | $29.99 | per year |
| TNote Special Yearly | $29.99 | per year |
| Special offer package | $39.99 | per year |
| Yearly | $69.99 | per year |


### ChatPDF

[App page](https://appshunter.io/ios/app/chatpdf-ai-chat-with-pdf-doc/id6743073426)

Turn any PDF into an interactive conversation. Ask questions in natural language and get instant, accurate answers with page citations. Supports all PDF types and offers features like instant summaries and a history timeline.

**Highlights:** Chat with any PDF, Instant summaries, Natural language questions, Page citations, Universal document support, History timeline, Dark mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Note Taking AI free?

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

### Is ChatPDF free?

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

### Do Note Taking AI or ChatPDF have ads?

Note Taking AI shows ads; ChatPDF does not.

### Which is updated more often, Note Taking AI or ChatPDF?

Note Taking AI ships an update every 4 days, and ChatPDF every 3 weeks. Most recently, Note Taking AI was updated on September 16, 2026 and ChatPDF on August 3, 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.*