# Summarize vs ChatPDF

The clearest difference is ads: ChatPDF at none against Summarize's shown. ChatPDF also leads on update cadence (every 2 months vs every 7 months) and iOS requirement (13.4 vs 15.0). Summarize's advantage is rating (3.9 vs 3.5). On price, ratings volume, in-app purchases and monetization model 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 sells 4 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Summarize holds the better App Store score, 3.9 against 3.5. Both are backed by a comparable volume of ratings — 16 and 13 respectively.

Summarize ships an update every 7 months, ChatPDF every 2 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | Summarize | ChatPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (16 ratings)](https://appshunter.io/ios/app/summarize-ai-text-summarizer/id6475821548/reviews)** | [3.5 (13 ratings)](https://appshunter.io/ios/app/chatpdf-pdf-ai-and-pdf-summary/id6476518216/reviews) |
| Number of ratings | **16** | 13 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 12 MB | 27 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) | [BOGAZICI YAYINLARI ANONIM SIRKETI](https://appshunter.io/developer/1331653456) |

## 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

[App page](https://appshunter.io/ios/app/chatpdf-pdf-ai-and-pdf-summary/id6476518216)

This AI chatbot transforms documents into interactive conversations. Get instant homework help, summarize articles, and generate essays. It supports multiple file types and languages, making learning and research more efficient.

**Highlights:** Document summarization, Homework assistance, Essay generation, Web page summarization, Multilingual support, Interactive document chatbot

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ai Summarizer PDF Summary | $9.99 | per 7 days |
| ChatPDF Ask Ai PDF Summary Doc | $19.99 | per month |
| ChatPDF - PDF Summary Trial | $29.99 | per 3 months |
| Ask PDF Ai PDF Assist Doc Help | $69.99 | per year |


## Frequently asked questions

### Is Summarize free?

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

### Is ChatPDF free?

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

### Which has better reviews, Summarize or ChatPDF?

Summarize is rated higher. Summarize averages 3.9 out of 5 from 16 ratings, while ChatPDF averages 3.5 from 13 ratings.

### Do Summarize or ChatPDF have ads?

Summarize shows ads; ChatPDF does not.

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

Summarize ships an update every 7 months, and ChatPDF every 2 months. Most recently, Summarize was updated on November 4, 2026 and ChatPDF on November 4, 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.*