Compare the Top PDF Annotators for iPad as of October 2026

What are PDF Annotators for iPad?

PDF annotation tools are pieces of software designed to allow users to add notes and highlight text on PDF documents. They can be used by students or professionals to mark up documents, make comments, and organize information in an intuitive way. Annotations may also include drawing shapes or adding images. The annotations can then be saved with the document for easy sharing and future reference. Compare and read user reviews of the best PDF Annotators for iPad currently available using the table below. This list is updated regularly.

  • 1
    Apryse PDF SDK
    Apryse (formerly PDFTron) powers the future of document technology. We help businesses, developers, and enterprises handle documents with unmatched speed, accuracy, and security. Whether running in secure server environments or delivering seamless web-based experiences, Apryse makes document workflows smarter and easier. With Apryse, you can: Embed powerful document features directly into your apps — from viewing and editing to collaboration and compliance. Run at enterprise scale on secure server infrastructure, ensuring reliability without cloud dependencies. Deliver seamless in-browser document experiences with responsive, accessible, and feature-rich web capabilities. Trusted globally, Apryse empowers organizations to simplify operations, enhance productivity, and create exceptional document experiences.
    Starting Price: 0.00
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  • 2
    Nutrient SDK
    Nutrient is the comprehensive solution for all your PDF needs, offering tools that effortlessly integrate and operate PDF functionality across any platform. 1. SDK PRODUCTS Integrate robust PDF functionality into iOS, Android, Windows, web (JavaScript), or any cross-platform technology, providing capabilities such as PDF viewing, markup, collaboration, and more. 2. LIBRARIES Utilize our potent .NET and Java libraries to boost your backend applications with batch processing of redactions and PDF forms, OCR’d scanned text, and editing of PDF documents, directly from your application server. 3. PROCESSOR Our dynamic PDF microservice, Processor, enables swift generation of PDFs from HTML, including HTML forms, along with Office-to-PDF conversions, OCR, redaction, and XFDF merging and exporting. 4. PDF API Use hosted PDF API to generate, convert, and modify PDF documents in your workflows. We manage the development and server administration, letting you focus on what you do best.
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  • 3
    Drawboard PDF

    Drawboard PDF

    Drawboard

    Drawboard PDF is the most intuitive PDF editing and markup app for Windows, iOS, macOS, android and web. Powerful PDF tools that feel good to use. Drawboard PDF – Get all the essential free. Mark up and edit any PDF with the ease of pen and paper. Drawboard Pro toolset - Upgrade to use advanced tools and Store+Share with your team. MARK UP AND DRAW All the drawing tools you need to mark and collaborate with the feel of pen and paper. INSERT Insert elements into your documents like, text, notes, callouts, signatures, images, audio notes, and more. MEASURE Take accurate measurements of elements on-page with technical measurement tools and calibration. MANAGE Local and Clouds PDFs in one place. Merge, split, reorder and compress COLLABORATE Real-time collaboration on-page in real time with instant syncing CROSS-PLATFORM Work from anywhere on any device, in real-time!
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    Starting Price: $5.99 per month
  • 4
    Nitro PDF

    Nitro PDF

    Nitro Software

    Nitro PDF is a full-featured PDF editor and is recognized as the strongest alternative to Adobe Acrobat. It's simple to purchase, easy to implement, and straightforward to use. With a powerful suite of tools, you can easily edit, convert, sign, annotate, combine, secure, and protect your documents, streamlining workflows and allowing you to focus on what matters. Our flexible plans and affordable pricing cater to everyone, from individual users and small teams to large enterprises. Plus, we offer a wide range of support resources to ensure the success of every customer.
    Starting Price: $15/user/month
  • 5
    PDF Reader Pro

    PDF Reader Pro

    PDF Technologies, Inc

    Back to School Bonanza! Enjoy 50% OFF on PDF Reader Pro and Filmage Screen Buy PC Version, Get Mobile Version Free Aug.15. 2024 - Sept.5. 2024 PDF Reader Pro is powered by PDF Technologies®, founded in 2014, which is a leading software provider of affordable, secure Out-of-Box PDF solutions on Windows, Mac, iOS, & Android. SMBs, IT service, and knowledge workers increase their productivity by using PDF Reader Pro to make workflow smarter. As the best alternative to Adobe® PDF solution, PDF Reader Pro is a PDF powerhouse that will fulfill all your document needs. We offer free Trial and education plans, as well as PDF Technologies’ Software Development Kits (ComPDFkit/SDKs) to help developers reduce costs and improve productivity by integrating industry-leading PDF technologies into application workflows. Welcome to try. If you are interested in being our reseller or distributor, you can check our official site->Business->Partnership Program.
    Starting Price: $19.99/one-time/user
  • 6
    UPDF

    UPDF

    Superace Software Technology Co., Ltd.

    UPDF supports editing, annotating, and managing PDF seamlessly on for Windows, Mac, iOS and Android. You can get every tool you need to edit, annotate, and organize your PDF files in one premiere all-rounder smart application. It is explicitly designed to meet the desire of most users for a stunning yet very comprehensible interface that is not just only for beginners. Key Features: 1. Edit PDF Document - You can add or delete texts as well as edit the text's properties and formats such as its font style, font color, and size. - You can also crop, rotate, replace, extract or delete images. 2. Annotate PDF - Easily highlight, underline, and strike out those parts. You can also add shapes, sticky notes and text boxes for a quicker and easier means of adding texts. 3. PDF Page Management - Rotate, delete, extract and rearrange PDF pages as you need. 4. View and Navigate PDF Files - Flexible reading mode such as single page mode or double-page mode.
    Starting Price: Free
  • 7
    MuPDF

    MuPDF

    Artifex Software

    Add powerful PDF functionality to all of your software application projects. MuPDF is a highly versatile, customizable PDF SDK that can be used as a PDF renderer, viewer, or library. The tiny footprint and lightning-fast performance make MuPDF a perfect fit for mobile browsers, eBooks, and embedded applications where small size is key. MuPDF supports a variety of interactive features including annotations, form filling, digital signatures, redactions, text search, and progressive loading. The wide range of input and output formats and our full range of platform support deliver a flexible solution to easily and successfully fulfill your project’s unique needs. MuPDF supports PDF, XPS, OpenXPS, EPUB, FictionBook 2 and CBZ. The MuPDF API easily integrates with all of the major platforms including Android, iOS, Linux, macOS, OpenBSD, and Windows. C++ and Python bindings have been added making it easy to use the MuPDF library from these languages.
    Starting Price: $749/per platform*
  • 8
    PDFgear

    PDFgear

    PDFgear

    PDFgear is an all-in-one PDF solution that helps users view, edit, protect, convert, sign, annotate, organize, OCR, Copilot, organize PDF files, and make more possibilities on Windows, MacOS, iOS, and iPadOS. PDFgear offers all expected functions in its clean and straightforward interface so users could enjoy their document reading and editing experience without disturbance. PDFgear Copilot provides more possibilities as a personal document assistant. As it's powered by AI, users could easily manipulate all PDFgear functions and chat with PDFs by asking PDFgear Copilot. Get lost in various functions and comprehensive document content? Don't worry! Just ask Copilot! It will cover everything. With PDFgear and Copilot in it, processing PDF is like a walk in the garden.
    Starting Price: Free
  • 9
    KDAN PDF

    KDAN PDF

    Kdan Mobile Software

    KDAN PDF is a high-performance document intelligence solution designed for professionals who require robust editing and analysis tools across Windows, Mac, iOS, and Android. It functions as a comprehensive PDF engine that streamlines the document lifecycle through advanced AI integration. Users can leverage the built-in AI assistant to summarize long reports and extract structured data from complex files instantly. The software excels in high-accuracy OCR, supporting over 50 languages to transform scanned images into searchable text. Key metrics of KDAN PDF include its optimized app launch speeds and powerful offline processing capabilities, allowing for secure text editing, file conversion, and page management without an internet connection. With features like Bates numbering, secure redaction, and multi-format conversion (Office, HTML, ePub), KDAN PDF provides a flexible and efficient environment for managing professional digital archives on any device.
    Starting Price: $59.99/year (billed annually)
  • 10
    LiquidText

    LiquidText

    LiquidText

    Review documents faster. Find facts effortlessly. See the connections others miss. Go past the limits of paper with LiquidText. Note-taking and document analysis tools have changed little from the margin notes, highlighting, and sticky notes we have used forever. Most apps today try to duplicate paper, but, in spite of this, over 80% of knowledge workers still prefer paper at work and school. LiquidText moves beyond paper. It captures your reading, notes, highlights, annotations and observations just like paper; but goes further to reveal their connections, to source materials and each other in a way that documents and maps your project in a clear and shareable form. We connect related notes into ideas, and we connect your ideas into reports. Every note, idea and observation can be connected to others, and a single tap can show those relationships and original context.
    Starting Price: $7.99 per month
  • 11
    LightPDF

    LightPDF

    Wangxu Technology Co.,Ltd.

    LightPDF is an all-in-one, AI-powered PDF productivity platform designed to help users create, understand, and manage documents more efficiently across devices. It integrates advanced AI tools such as an AI PDF Generator, AI presentation creation, PDF-to-mind-map conversion, document translation, and an AI Agent—with a complete set of PDF capabilities including watermark removal, file conversion, encryption, compression, and other essential document-processing features—enabling users to handle complex PDF tasks more efficiently in one place. With both intelligent automation and reliable PDF tools, LightPDF helps users work smarter and faster whether they are studying, working, or collaborating.
    Starting Price: Free
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