# AddToPDF vs Silo PDF

The clearest difference is price: Silo PDF at Free against AddToPDF's $2.99. AddToPDF's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Silo PDF is free to download; AddToPDF costs $2.99 up front. Silo PDF sells 1 one-off in-app purchase. AddToPDF asks for nothing beyond the download.

## The numbers

| Metric | AddToPDF | Silo PDF |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | Paid | — |
| Size | 6 MB | 50 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DENIS SAUVE](https://appshunter.io/developer/1894548193) | [Saulo Marchi](https://appshunter.io/developer/1690796390) |

## What reviewers say

### AddToPDF

[App page](https://appshunter.io/ios/app/addtopdf/id6762531389)

Easily edit PDFs on your iPhone or iPad. Scan documents, add text, sign, and fill forms directly on your device. Enjoy a private, offline experience with a one-time purchase.

**Highlights:** Scan documents with camera, Add text and signatures, Fill PDF forms, Reorder, rotate, delete pages, Offline functionality, One-time purchase

**Features:** Vision Pro support

**In-app purchases:** none


### Silo PDF

[App page](https://appshunter.io/ios/app/silo-pdf-private-pdf-tools/id6763321550)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Silo Pro: Redact, Watermark | $24.99 | one-time |


## Frequently asked questions

### Is AddToPDF free?

AddToPDF costs $2.99, with no in-app purchases.

### Is Silo PDF free?

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

### Do AddToPDF or Silo PDF have ads?

Neither AddToPDF nor Silo PDF shows ads.

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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.*