# Summarize vs ChatPDF AI

The clearest difference is review sentiment: ChatPDF AI at 80% against Summarize's 0%. ChatPDF AI also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 7 months). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Summarize sells 3 in-app purchases, starting at $4.99 per 7 days and ChatPDF AI sells 5 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Summarize ships an update every 7 months, ChatPDF AI every 3 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Summarize | ChatPDF AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (16 ratings)](https://appshunter.io/ios/app/summarize-ai-text-summarizer/id6475821548/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 12 MB | 26 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arda Sen](https://appshunter.io/developer/1670665250) | [YAHYA KEMAL SERT](https://appshunter.io/developer/1725191042) |

## What reviewers say

### Summarize

[App page](https://appshunter.io/ios/app/summarize-ai-text-summarizer/id6475821548)

Condense lengthy articles, URLs, photos, and PDFs into concise summaries using AI. Customize language and tone, ask questions about the content, and track your summarization history for efficient information digestion.

**Highlights:** AI text summarization, Summarize URLs, photos, and PDFs, Interactive questioning on content, Customizable language and tone, History tracking of summaries, Content input via copy-paste, URL, upload

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $29.99 | per year |


### ChatPDF AI

[App page](https://appshunter.io/ios/app/chatpdf-ai-scan-and-summarize/id6503151297)

This app uses AI to quickly summarize lengthy documents and articles. It allows users to scan physical documents and interact with PDFs by asking questions to extract key information, enhancing learning and productivity.

**Highlights:** AI-powered PDF summarization, Scan physical documents, Chat with document contents, Interactive learning experience, Support for various document types, Document management

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatPDF AI Weekly Premium | $2.99 | per 7 days |
| ChatPDF AI Annual Subscription | $39.99 | per year |
| ChatPDF AI Weekly Subscription | $3.99 | one-time |
| ChatPDF AI Lifetime Subsc | $49.99 | one-time |
| ChatPDF AI Annual Subsc. | $59.99 | one-time |


## Frequently asked questions

### Is Summarize free?

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

### Is ChatPDF AI free?

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

### Do Summarize or ChatPDF AI have ads?

Summarize shows ads; ChatPDF AI does not.

### Which is updated more often, Summarize or ChatPDF AI?

Summarize ships an update every 7 months, and ChatPDF AI every 3 weeks. Most recently, Summarize was updated on November 4, 2026 and ChatPDF AI on October 30, 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.*