PDF Max - Edit, Sign PDFs

PDF Max - Edit, Sign PDFs

Scan, OCR, Research & Study

1.2K ratings
189 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 7, 2012
  • September 15, 2026

Features

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About

This app allows you to read, annotate, and sign PDF documents on your mobile device. You can mark up text, add handwritten notes, insert stamps, fill out forms, and manage PDF pages. It also offers robust file management and cloud integration for seamless access to your documents.

✓Read and annotate PDFs
✓Fill and sign PDF forms
✓Handwriting and text markup
✓Manage PDF pages
✓Cloud storage integration
✓Voice annotations
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What users say

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What's New in PDF Max

27.5.0

September 15, 2026

Made for iOS 27, and Siri finds your PDFs. A NEW LOOK • Tools on floating glass. The ribbon breaks into islands — back and sidebar, the tabs, undo and redo — with the tool panel on its own rounded island below. • Pages reach the edges. The document fills the screen and scrolls behind the ribbon, so there is more page and less chrome. SEARCH WITH SIRI • Open a PDF by name. "Open Rental Agreement in PDF Max." Face ID, Touch ID or your passcode confirms before the file opens. • Search out loud. "Search PDFs in PDF Max" lands in My Files with the search panel already filled in. • A Siri & Search panel on the My Files toolbar controls what Siri can do. Letting Siri see the contents of your PDFs is opt-in and stays off until you turn it on. Requires iOS 27 or iPadOS 27. Siri availability varies by language and region. ALSO IN THIS UPDATE • Ask My Library. Ask a question across your saved PDFs and research. Answers are generated on your device. Needs iOS 27 or iPadOS 27 with Apple Intelligence. • Continue reading. On iPhone, Home keeps the last PDF you opened and the page you left on. • Presentation controls now fit every iPhone in portrait, so End is always reachable.

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Subscriptions & In-App Purchases

Premium Subscription (1 week)

Premium Subscription

$1.997 Days
Price Updates
September 21, 2026→$1.99
August 26, 2026→$0.99
August 19, 2026→$7.99
August 7, 2026→$1.99
How to cancel PDF Max subscription ⁉️

User reviews

Defeito

Não consigo abrir meus textos depois da última atualização. Muito triste isso. Todos os meus estudos e anotações nos livros e artigos foram perdidos.

Crashing

I have always enjoyed this app. However, I just downloaded the latest version on my new iPhone 13, which has the latest iOS on it. And PDF Max keeps crashing every time I try to annotate a page. I never had that problem with the older version on any device! What can be done to fix this problem?

Stopped working having not long renewed subscription

App now crashes every time I go to create a PDF or try saving a current one. Have tried the fixes google recommends but none work and no support available on website.

bom mas o kybook 3 é melhor

alem de caro o app tem alguns problemas, então acabei optando pelo kybook 3

Great app when works

I purchased the pro app but for some reason does not transfer all documents from the basic version.

Developer apps

User experience

🐞

Reported Bugs

4 issues

Disappearing documents and annotations

Bug

Incompatibility with newer devices

Bug

Crashes on launch

Bug

Unreliable file saving

Bug
✨

Requested Features

5 requests

Dark mode option

Feature

Ability to edit/delete annotations

Feature

Better integration with cloud storage

Feature

Split-screen viewing for PDFs

Feature

Improved handwriting recognition

Feature

FAQ

What can I do with PDF Max?

PDF Max allows you to read, annotate, and sign PDF documents on your iPhone and iPad. You can mark up text with highlights and handwriting, insert texts and stamps, fill out and sign PDFs, and even manipulate PDF pages. It also includes features for managing PDF outlines, links, and bookmarks, as well as robust file management capabilities.

Can I fill out forms with PDF Max?

Yes, PDF Max supports filling out various types of PDF forms, including text fields, checkboxes, radio buttons, dropdown lists, and date-time fields. It also supports JavaScripted-powered PDF forms, AcroForms, and Static XFA Forms. You can use the zoom-in writing feature to accurately fill out scanned or non-interactive PDF forms.

How does PDF Max handle file management?

PDF Max features a comprehensive file manager with thumbnail and list views, allowing you to sort files by name, modified date, or size. You can categorize files with color tags or favorites. It offers seamless integration with Dropbox and Google Drive, enabling you to work with files both online and offline. You can also copy or move files between cloud storage services and manage a local library.

Is PDF Max compatible with my device?

PDF Max is designed for use on iPhone and iPad devices. The description does not specify minimum iOS version requirements, but it is optimized for mobile use on Apple's iOS platform.

What are the annotation features in PDF Max?

PDF Max offers a wide range of annotation tools. These include text markup options like highlight, underline, and strike out, as well as unlimited threaded comments. You can create voice annotations, use handwriting with an advanced zoom-in feature, and utilize eraser tools. Shape tools for drawing lines, arrows, rectangles, and ovals with intelligent snapping are also available, along with a freetext tool and stamp tool for inserting predefined or custom stamps.