# ID vs ChatPDF AI

The clearest difference is in-app purchases: ID at none against ChatPDF AI's 5. ChatPDF AI's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ChatPDF AI sells 5 in-app purchases, starting at $2.99 per 7 days. ID asks for nothing beyond the download.

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

## The numbers

| Metric | ID | ChatPDF AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 47 MB | 26 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IDmobile](https://appshunter.io/developer/1596784656) | [YAHYA KEMAL SERT](https://appshunter.io/developer/1725191042) |

## What reviewers say

### ID

[App page](https://appshunter.io/ios/app/id-mobile/id1596784384)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 ID free?

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

### Is ChatPDF AI free?

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

### Do ID or ChatPDF AI have ads?

Neither ID nor ChatPDF AI shows ads.

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

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*