# PDF Tools vs AIChatDoo

The clearest difference is ads: AIChatDoo at none against PDF Tools's shown. AIChatDoo also leads on update cadence (every 5 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Tools sells 2 in-app purchases, starting at $0.99 per month and AIChatDoo sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Tools ships an update every 3 months, AIChatDoo every 5 days. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | PDF Tools | AIChatDoo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 44 MB | 9 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aziz Kurt](https://appshunter.io/developer/1434989306) | [NovaMind AI](https://appshunter.io/developer/1837941195) |

## What reviewers say

### PDF Tools

[App page](https://appshunter.io/ios/app/pdf-tools-scan-and-editor/id6736427782)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annual Subscription | $3.99 | per year |


### AIChatDoo

[App page](https://appshunter.io/ios/app/aichatdoo-write-think-create/id6777403201)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| week membership | $3.99 | per 7 days |
| year membership | $14.99 | per year |
| lifetime membership | $19.99 | one-time |


## Frequently asked questions

### Is PDF Tools free?

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

### Is AIChatDoo free?

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

### Do PDF Tools or AIChatDoo have ads?

PDF Tools shows ads; AIChatDoo does not.

### Which is updated more often, PDF Tools or AIChatDoo?

PDF Tools ships an update every 3 months, and AIChatDoo every 5 days. Most recently, PDF Tools was updated on September 17, 2026 and AIChatDoo on September 9, 2026.

---

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