# ChatAI vs PDF Tool

The clearest difference is in-app purchases: PDF Tool at none against ChatAI's 5. ChatAI's advantage is update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ChatAI sells 5 in-app purchases, starting at $3.39 per 7 days. PDF Tool asks for nothing beyond the download.

ChatAI ships an update fortnightly, PDF Tool every 2 months. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | ChatAI | PDF Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (32 ratings)](https://appshunter.io/ios/app/chatai-ai-chatbot-assistant/id6448428308/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 30 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 4+ |
| Developer | [Braly](https://appshunter.io/developer/1637078418) | [Eachut Incorporation](https://appshunter.io/developer/1657352481) |

## What reviewers say

### ChatAI

[App page](https://appshunter.io/ios/app/chatai-ai-chatbot-assistant/id6448428308)

Engage in smart conversations with a virtual bot that acts as a personal assistant. Get instant, impressive answers to your questions and explore advanced AI features for various applications. Its user-friendly interface makes it easy to start chatting and discover its versatile capabilities.

**Highlights:** AI Chatbot Assistant, Contextually appropriate responses, Versatile topic adaptation, Easy-to-use interface, Learns from data, High-quality tailored responses

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Offer | $3.39 | per 7 days |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium Offer | $10.49 | per month |
| Monthly Premium | $14.99 | per month |
| Yearly Premium | $63.90 | per year |


### PDF Tool

[App page](https://appshunter.io/ios/app/pdf-tool/id6760588069)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ChatAI free?

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

### Is PDF Tool free?

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

### Do ChatAI or PDF Tool have ads?

Neither ChatAI nor PDF Tool shows ads.

### Which is updated more often, ChatAI or PDF Tool?

ChatAI ships an update fortnightly, and PDF Tool every 2 months. Most recently, ChatAI was updated on October 2, 2026 and PDF Tool on October 12, 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.*