# PDF Reader vs S.A.M.

The clearest difference is ads: S.A.M. at none against PDF Reader's shown. S.A.M. also leads on update cadence (every 3 days vs every 112 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PDF Reader ships an update every 112 months, S.A.M. every 3 days. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PDF Reader | S.A.M. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 112 months | **Every 3 days** |
| Size | 10 MB | 62 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Aishvarya Sadasivam](https://appshunter.io/developer/1062048241) | [Eficiencia Energetica y Seguridad S.A de C.V.](https://appshunter.io/developer/1417341104) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-simple/id1084659776)

**Features:** macOS Compatibility

**In-app purchases:** none


### S.A.M.

[App page](https://appshunter.io/ios/app/sam/id6475045112)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Reader free?

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

### Is S.A.M. free?

S.A.M. is free to download, with no in-app purchases.

### Do PDF Reader or S.A.M. have ads?

PDF Reader shows ads; S.A.M. does not.

### Which is updated more often, PDF Reader or S.A.M.?

PDF Reader ships an update every 112 months, and S.A.M. every 3 days. Most recently, PDF Reader was updated on October 4, 2026 and S.A.M. on September 30, 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.*