# Chat PDF AI vs ChatPDF AI

The clearest difference is update cadence: ChatPDF AI at every 9 days against Chat PDF AI's every 8 months. ChatPDF AI also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Chat PDF AI sells 2 in-app purchases, starting at $4.99 per 7 days and ChatPDF AI sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Chat PDF AI ships an update every 8 months, ChatPDF AI every 9 days. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Chat PDF AI | ChatPDF AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 9 days** |
| Size | 191 MB | 100 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kamalkumar Trapasiya](https://appshunter.io/developer/1587617174) | [nimet oz](https://appshunter.io/developer/1861573318) |

## What reviewers say

### Chat PDF AI

[App page](https://appshunter.io/ios/app/chat-pdf-ai-docuchat/id6475684915)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Access | $4.99 | per 7 days |
| PRO Access | $29.99 | per year |


### ChatPDF AI

[App page](https://appshunter.io/ios/app/chatpdf-ai-chat-pdf-document/id6759845164)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Weekly Pro | $6.99 | per 7 days |
| Monthly Pro | $19.99 | per month |
| Yearly Pro | $44.99 | per year |
| Yearly Pro | $89.99 | per year |


## Frequently asked questions

### Is Chat PDF AI free?

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

Neither Chat PDF AI nor ChatPDF AI shows ads.

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

Chat PDF AI ships an update every 8 months, and ChatPDF AI every 9 days. Most recently, Chat PDF AI was updated on November 4, 2026 and ChatPDF AI on October 28, 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.*