# PDF Reader vs KantanPDF

The clearest difference is in-app purchases: PDF Reader at none against KantanPDF's 1. KantanPDF's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 113 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. KantanPDF sells 1 one-off in-app purchase. PDF Reader asks for nothing beyond the download.

PDF Reader ships an update every 113 months, KantanPDF every 3 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PDF Reader | KantanPDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 113 months | **Every 3 weeks** |
| Size | 9 MB | 22 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aishvarya Sadasivam](https://appshunter.io/developer/1062048241) | [NOH HIYEONG](https://appshunter.io/developer/1839727056) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-view/id1084658552)

**Features:** macOS Compatibility

**In-app purchases:** none


### KantanPDF

[App page](https://appshunter.io/ios/app/kantanpdf-photo-reports/id6752878581)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $1.99 | one-time |


## Frequently asked questions

### Is PDF Reader free?

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

### Is KantanPDF free?

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

### Do PDF Reader or KantanPDF have ads?

PDF Reader shows ads; KantanPDF does not.

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

PDF Reader ships an update every 113 months, and KantanPDF every 3 weeks. Most recently, PDF Reader was updated on October 21, 2026 and KantanPDF on October 25, 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.*