# Sign PDF documents vs PDF Document Editor, Read Book

The clearest difference is ads: PDF Document Editor, Read Book at none against Sign PDF documents's shown. PDF Document Editor, Read Book also leads on update cadence (every 9 days vs every 3 weeks). Sign PDF documents's advantage is device support (4 vs 2). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Sign PDF documents sells 3 in-app purchases, starting at $2.99 per month and PDF Document Editor, Read Book sells 6 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sign PDF documents ships an update every 3 weeks, PDF Document Editor, Read Book every 9 days. Both last shipped on October 4, 2026.

## The numbers

| Metric | Sign PDF documents | PDF Document Editor, Read Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sign-pdf-documents/id1011784538/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Ad-supported | — |
| Size | 19 MB | 33 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emanuele Floris](https://appshunter.io/developer/597490842) | [Oleksandr Bilyk](https://appshunter.io/developer/1588574362) |

## What reviewers say

### Sign PDF documents

[App page](https://appshunter.io/ios/app/sign-pdf-documents/id1011784538)

Easily sign documents digitally without printing. This app allows for unlimited signatures without requiring a subscription or registration, making document signing quick and convenient.

**Highlights:** Unlimited digital signatures, No subscription required, No registration needed, Sign without printing, Document archiving

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $2.99 | per month |
| Unlimited Access | $8.99 | per year |
| PRO Lifetime Access | $22.99 | one-time |


### PDF Document Editor, Read Book

[App page](https://appshunter.io/ios/app/pdf-document-editor-read-book/id6504371765)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Editor: PDF Reader, Sign | $1.99 | per 7 days |
| PDF Editor: PDF Reader, Sign | $2.99 | per 7 days |
| PDF Editor: PDF Reader, Sign | $5.99 | per month |
| PDF Editor: PDF Reader, Sign | $6.99 | per month |
| PDF Editor: PDF Reader, Sign | $24.99 | per year |
| PDF Editor: PDF Reader, Sign | $34.99 | per year |


## Frequently asked questions

### Is Sign PDF documents free?

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

### Is PDF Document Editor, Read Book free?

PDF Document Editor, Read Book is free to download, with in-app purchases available.

### Do Sign PDF documents or PDF Document Editor, Read Book have ads?

Sign PDF documents shows ads; PDF Document Editor, Read Book does not.

### Which is updated more often, Sign PDF documents or PDF Document Editor, Read Book?

Sign PDF documents ships an update every 3 weeks, and PDF Document Editor, Read Book every 9 days. Most recently, Sign PDF documents was updated on October 4, 2026 and PDF Document Editor, Read Book on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*