# ChatPDF AI vs Chat PDF

The clearest difference is update cadence: Chat PDF at every 3 days against ChatPDF AI's every 3 months. ChatPDF AI's advantage is iOS requirement (16.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChatPDF AI sells 3 in-app purchases, starting at $2.99 per 7 days and Chat PDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ChatPDF AI ships an update every 3 months, Chat PDF every 3 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | ChatPDF AI | Chat PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 32 MB | 23 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Swifty Brains LLP](https://appshunter.io/developer/1844558566) | [Leandro Centuriao Maia](https://appshunter.io/developer/6773363829) |

## What reviewers say

### ChatPDF AI

[App page](https://appshunter.io/ios/app/chatpdf-ai-chat-pdf-summary/id6759276962)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatPDF PREMIUM | $2.99 | per 7 days |
| ChatPDF PREMIUM | $6.99 | per month |
| ChatPDF AI Premium | $59.99 | per year |


### Chat PDF

[App page](https://appshunter.io/ios/app/chat-pdf-chatcapsule/id6773363827)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatCapsule Pro - Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is ChatPDF AI free?

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

### Is Chat PDF free?

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

### Do ChatPDF AI or Chat PDF have ads?

Neither ChatPDF AI nor Chat PDF shows ads.

### Which is updated more often, ChatPDF AI or Chat PDF?

ChatPDF AI ships an update every 3 months, and Chat PDF every 3 days. Most recently, ChatPDF AI was updated on October 31, 2026 and Chat PDF on October 31, 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.*