# PDF Reader vs PDFai

The clearest difference is in-app purchases: PDF Reader at none against PDFai's 3. PDFai'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. PDFai sells 3 in-app purchases, starting at $4.99 per 7 days. PDF Reader asks for nothing beyond the download.

PDF Reader ships an update every 2 months, PDFai fortnightly. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PDF Reader | PDFai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 121 MB | 96 MB |
| Requires iOS | 15.5 | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Giap](https://appshunter.io/developer/6773779077) | [KolekciApps LLC](https://appshunter.io/developer/1873341851) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-edit-scan-and-sign/id6779201459)

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

**In-app purchases:** none


### 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 Reader free?

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

### Is PDFai free?

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

### Do PDF Reader or PDFai have ads?

Both PDF Reader and PDFai show ads.

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

PDF Reader ships an update every 2 months, and PDFai fortnightly. Most recently, PDF Reader was updated on October 31, 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.*