# Summarize Text Summary vs ChatPDF AI

The clearest difference is ads: ChatPDF AI at none against Summarize Text Summary's shown. ChatPDF AI also leads on update cadence (every 3 weeks vs every 6 months) and iOS requirement (13.4 vs 15.5). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Summarize Text Summary sells 6 in-app purchases, starting at $0.99 per month 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 Text Summary ships an update every 6 months, ChatPDF AI every 3 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Summarize Text Summary | ChatPDF AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (18 ratings)](https://appshunter.io/ios/app/summarize-text-summary/id6446126096/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 80.0% of reviews | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 154 MB | 26 MB |
| Requires iOS | 15.5 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sick App Developers GmbH](https://appshunter.io/developer/1507412735) | [YAHYA KEMAL SERT](https://appshunter.io/developer/1725191042) |

## What reviewers say

### Summarize Text Summary

[App page](https://appshunter.io/ios/app/summarize-text-summary/id6446126096)

This AI-powered tool quickly condenses lengthy text into concise summaries, extracts key insights, and generates intelligent notes. It supports various text formats and allows for customizable output, helping users save time and stay organized.

**Highlights:** Effortless text summaries, Smart note-taking, Keyword extraction, Supports all text formats, Customizable output detail, Save and manage notes, Seamless sharing

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Summary Gold Monthly | $0.99 | per month |
| Summary Platinum Monthly | $2.99 | per month |
| Summary Diamond Monthly | $4.99 | per month |
| Summary Gold Yearly | $9.99 | per year |
| Summary Platinum Yearly | $29.99 | per year |
| Summary Diamond Yearly | $79.99 | 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 Text Summary free?

Summarize Text Summary 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 Text Summary or ChatPDF AI have ads?

Summarize Text Summary shows ads; ChatPDF AI does not.

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

Summarize Text Summary ships an update every 6 months, and ChatPDF AI every 3 weeks. Most recently, Summarize Text Summary was updated on October 24, 2026 and ChatPDF AI on October 17, 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.*