# Sign PDF vs PDF Editor ,PDF Book Reader ®

The clearest difference is review sentiment: PDF Editor ,PDF Book Reader ® at 83% against Sign PDF's 7%. PDF Editor ,PDF Book Reader ® also leads on update cadence (every 3 days vs every 69 months) and device support (5 vs 2). Sign PDF's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Sign PDF sells 3 in-app purchases, starting at $3.99 per 7 days and PDF Editor ,PDF Book Reader ® sells 6 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Sign PDF ships an update every 69 months, PDF Editor ,PDF Book Reader ® every 3 days. The most recent releases landed on October 24, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Sign PDF | PDF Editor ,PDF Book Reader ® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (22K ratings)](https://appshunter.io/ios/app/pdf-editor-pdf-book-reader/id1354910662/reviews)** |
| Number of ratings | — | **22K** |
| Positive reviews | 7.1% of reviews | **82.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 69 months | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 36 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Matteo Morelli](https://appshunter.io/developer/520803077) | [Milad Fakhr](https://appshunter.io/developer/380865844) |

## What reviewers say

### Sign PDF

[App page](https://appshunter.io/ios/app/sign-pdf-scan-and-fill-docs/id979534235)

Easily add your signature to PDF documents using your device. Create signatures by taking a photo, using special fonts, drawing on screen, or importing an image. Export signed documents as PDFs or JPEGs, and print or share them directly.

**Highlights:** Apply signature to PDF, Export as PDF, PDF to JPEG conversion, Print from device, Share via email, Multiple signature creation modes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Firma Pro Weekly | $3.99 | per 7 days |
| Firma Pro Yearly | $22.99 | per year |
| Firma Pro Lifetime | $49.99 | one-time |


### PDF Editor ,PDF Book Reader ®

[App page](https://appshunter.io/ios/app/pdf-editor-pdf-book-reader/id1354910662)

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to read, edit, annotate, convert, and scan PDFs with an intuitive interface. Features include form filling, digital signatures, page management, and robust sharing options across Apple devices.

**Highlights:** Read and edit PDFs, Annotate and markup documents, Fill forms and add digital signatures, Convert images and web pages to PDF, Scan documents with OCR, Organize and manage PDF library, Share via AirDrop and iCloud

**Features:** Family Sharing, Siri integration, Apple Watch app, iMessage stickers, SharePlay, iPhone Duo support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| Quarterly Subscription | $19.99 | per 3 months |
| Yearly Subscription | $49.99 | per year |
| Scanner (OCR) | $3.99 | one-time |
| PDF Editor Creator  & Scanner | $49.99 | one-time |
| Lifetime Access | $99.99 | one-time |

**What reviewers like**

- 🚀 Easy to use and navigate
- 👍 Helpful for signing documents
- 🚀 Efficient PDF editing and management
- 🚀 Reliable performance and compatibility
- 👍 Useful for reading and annotating PDFs

**What reviewers complain about**

- 🐛 Issues with saving edits and text input
- 🐛 Occasional crashes or freezes
- 🔒 Concerns about privacy and data collection

**Reported bugs**

- Text not saving properly after editing
- Difficulty accessing documents at the bottom of PDFs

**Requested features**

- Add folder organization for PDFs
- Improve text editing and input responsiveness
- Provide more customization options for PDF viewing
- Integrate with cloud storage services


## Frequently asked questions

### Is Sign PDF free?

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

### Is PDF Editor ,PDF Book Reader ® free?

PDF Editor ,PDF Book Reader ® is free to download, with in-app purchases available.

### Do Sign PDF or PDF Editor ,PDF Book Reader ® have ads?

Neither Sign PDF nor PDF Editor ,PDF Book Reader ® shows ads.

### Which is updated more often, Sign PDF or PDF Editor ,PDF Book Reader ®?

Sign PDF ships an update every 69 months, and PDF Editor ,PDF Book Reader ® every 3 days. Most recently, Sign PDF was updated on October 24, 2026 and PDF Editor ,PDF Book Reader ® on November 1, 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.*