# Clarissa AI vs ChatPDF

The clearest difference is in-app purchases: Clarissa AI at none against ChatPDF's 2. ChatPDF's advantage is iOS requirement (15.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. ChatPDF sells 2 in-app purchases, starting at $0.99 per 7 days. Clarissa AI asks for nothing beyond the download.

## The numbers

| Metric | Clarissa AI | ChatPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clarissa-ai/id6756459191/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | Free | — |
| Size | 8 MB | 47 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cameron Rye](https://appshunter.io/developer/1860751198) | [Ikhwan Noorsetyo](https://appshunter.io/developer/1739847271) |

## What reviewers say

### Clarissa AI

[App page](https://appshunter.io/ios/app/clarissa-ai/id6756459191)

An intelligent AI assistant that processes all requests on your device for complete privacy. It offers voice interaction, task management, and integration with Siri Shortcuts. Optional cloud AI access provides advanced reasoning capabilities.

**Highlights:** On-device AI processing for privacy, Voice interaction and dictation, Task management (weather, math, calendar, reminders), Siri Shortcuts integration, Optional cloud AI access, Conversation memory

**Features:** macOS Compatibility

**In-app purchases:** none


### ChatPDF

[App page](https://appshunter.io/ios/app/chatpdf-ai-document-assistant/id6758316696)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $0.99 | per 7 days |
| Yearly Subscription | $34.99 | per year |


## Frequently asked questions

### Is Clarissa AI free?

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

### Is ChatPDF free?

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

### Do Clarissa AI or ChatPDF have ads?

Neither Clarissa AI nor ChatPDF shows ads.

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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.*