# PDF AI vs PDFai

The clearest difference is ads: PDF AI at none against PDFai's shown. PDFai's advantage is update cadence (fortnightly vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. PDF AI sells 2 in-app purchases, starting at $3.99 per month and PDFai sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF AI ships an update every 9 months, PDFai fortnightly. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PDF AI | PDFai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Fortnightly** |
| Size | 70 MB | 96 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sherif Mahmoud](https://appshunter.io/developer/1793455743) | [KolekciApps LLC](https://appshunter.io/developer/1873341851) |

## What reviewers say

### PDF AI

[App page](https://appshunter.io/ios/app/pdf-ai-docs-pdf-email/id6746380492)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monat | $3.99 | per month |
| Pro Jahr | $24.99 | per year |


### PDFai

[App page](https://appshunter.io/ios/app/pdfai-pdf-chat-and-summarizer/id6780204877)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $99.99 | per year |


## Frequently asked questions

### Is PDF AI free?

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

### Is PDFai free?

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

### Do PDF AI or PDFai have ads?

PDFai shows ads; PDF AI does not.

### Which is updated more often, PDF AI or PDFai?

PDF AI ships an update every 9 months, and PDFai fortnightly. Most recently, PDF AI was updated on November 8, 2026 and PDFai on November 4, 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.*