# Summarizer AI vs ChatPDF

The clearest difference is rating: ChatPDF at 3.5 against Summarizer AI's 3.0. ChatPDF also leads on iOS requirement (13.4 vs 15.0). Summarizer AI's advantage is update cadence (monthly vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Summarizer AI sells 3 in-app purchases, starting at $6.99 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.

ChatPDF holds the better App Store score, 3.5 against 3.0. Both are backed by a comparable volume of ratings — 5 and 13 respectively.

Summarizer AI ships an update monthly, ChatPDF every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Summarizer AI | ChatPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/summarizer-ai/id6447693608/reviews) | **[3.5 (13 ratings)](https://appshunter.io/ios/app/chatpdf-pdf-ai-and-pdf-summary/id6476518216/reviews)** |
| Number of ratings | 5 | **13** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 1 MB | 27 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Deniz Cagilligecit](https://appshunter.io/developer/1682262417) | [BOGAZICI YAYINLARI ANONIM SIRKETI](https://appshunter.io/developer/1331653456) |

## What reviewers say

### Summarizer AI

[App page](https://appshunter.io/ios/app/summarizer-ai/id6447693608)

This AI-powered tool helps you quickly extract key information from long documents, PDFs, and web pages. Save time and improve comprehension by getting concise summaries tailored to your needs. It supports multiple languages and offers global accessibility for efficient learning and work.

**Highlights:** Instant AI-powered summaries, Summarize PDFs and scanned text, Webpage summarization via URL, Customizable summary length, Multilingual support, Copy-paste text summarization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $6.99 | per 7 days |
| Yearly Pro | $29.99 | per year |
| Lifetime Pro | $79.99 | one-time |


### 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 Summarizer AI free?

Summarizer AI 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, Summarizer AI or ChatPDF?

ChatPDF is rated higher. Summarizer AI averages 3.0 out of 5 from 5 ratings, while ChatPDF averages 3.5 from 13 ratings.

### Do Summarizer AI or ChatPDF have ads?

Neither Summarizer AI nor ChatPDF shows ads.

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

Summarizer AI ships an update monthly, and ChatPDF every 2 months. Most recently, Summarizer AI was updated on November 3, 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.*