Best Highlighter Document Apps

200+ iOS apps curated and reviewed

4.3 avg rating
15 free apps
Updated July 2026

If you already know LiquidText, this is the deeper bench. 200+ highlighter document apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.

Compare top Highlighter Document Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1LiquidTextLiquidTextFree4.6★ (6.4K)NoYesAug 2026
2pdfFiller: edit PDF documentspdfFiller: edit PDF documentsFree4.4★ (8.5K)NoYesAug 2026
3Highlighter PenHighlighter PenFree2.5★ (38)NoJun 2026
4RePaper Web PDF HighlighterRePaper Web PDF Highlighter$2.993.1★ (11)NoNoMay 2026
5PDF Pro - Reader Editor FormsPDF Pro - Reader Editor FormsFree4.7★ (6.9K)NoYesAug 2026
6PDF Highlighter - Annotate PDFPDF Highlighter - Annotate PDFFreeNoYesMay 2026
7The Magic HighlighterThe Magic Highlighter$1.993.9★ (20)NoNoJul 2026
8Highlights: PDF Reader & NotesHighlights: PDF Reader & NotesFree4.5★ (1.6K)NoYesAug 2026

Top Picks for Highlighter Document

LiquidText#1

LiquidText by LiquidText, Inc.

Annotate & review documents
Editor's Choice
📊 Productivity
4.6😐(6.4K ratings)
FreeIn-App Purchases
LiquidText screenshot 1
LiquidText screenshot 2
LiquidText screenshot 3
LiquidText screenshot 4
LiquidText screenshot 5
LiquidText screenshot 6

This app provides a dynamic workspace for reviewing and organizing information from documents and webpages. It allows users to extract key facts, connect ideas across different sources, and annotate content for research, writing, or study.

What We Love

  • 🚀 Powerful annotation and organization features
  • 📚 Excellent for academic and research work
  • 💡 Innovative concept and workflow
  • 🤖 Responsive and helpful customer support

Room to Improve

  • 💰 Expensive, especially for the subscription model
  • 🐛 Buggy and unstable at times
  • 🤯 Steep learning curve and unintuitive interface
pdfFiller: edit PDF documents#2

pdfFiller: edit PDF documents by airSlate, Inc.

Scan, fill, sign,make pdf docs
Strong Contender
💼 Business
4.4😞(8.5K ratings)
FreeIn-App Purchases
#41in Business
pdfFiller: edit PDF documents screenshot 1
pdfFiller: edit PDF documents screenshot 2
pdfFiller: edit PDF documents screenshot 3
pdfFiller: edit PDF documents screenshot 4
pdfFiller: edit PDF documents screenshot 5
pdfFiller: edit PDF documents screenshot 6

This app transforms your device into a mobile office for managing PDF documents. Edit, eSign, and fill out forms, then share or export them. It offers secure storage and access to millions of templates, with offline capabilities.

What We Love

  • 👍 Easy to use
  • 🚀 Makes virtual work easy
  • 💡 Great customer service/support
  • 👍 Simple and organized

Room to Improve

  • 🐛 Buggy and glitchy
  • 💰 Expensive subscription
  • 🔒 Concerns about privacy and security

More Highlighter Document apps to explore

4
RePaper Web PDF Highlighter
RePaper Web PDF Highlighter
RePaper Web PDF Highlighter
Highlight web pages and PDF
$2.99

Annotate web pages, PDFs, Word, and PowerPoint documents with customizable highlights and comments. Organize your content into folders and sync across devices using iCloud. Share and export your annotated files to various cloud services and other apps.

Highlight web pages and PDFsAdd comments in multiple colorsReader View for web and PDF
📊 Productivity
(11)
free
5
PDF Pro - Reader Editor Forms
PDF Pro - Reader Editor Forms
PDF Pro - Reader Editor Forms
Edit, annotate, view documents
Free

Edit, annotate, and read PDF documents on your iPhone and iPad. Highlight text, add notes, shapes, voice recordings, and photos. Search your entire PDF library, fill out forms, and sign documents.

Edit and annotate PDFsHighlight text and add notesEmbed audio and photo annotations
📊 Productivity
(6.9K)
subscription
6
PDF Highlighter - Annotate PDF
PDF Highlighter - Annotate PDF
PDF Highlighter - Annotate PDF
mark important text in PDF
Free
🔧 Utilities
(0)
7
The Magic Highlighter
The Magic Highlighter
The Magic Highlighter
Your search engine assistant.
$1.99

This Safari extension automatically highlights your search terms on search result pages across popular engines. It offers a private, on-device solution to quickly find the information you need, replacing traditional find-in-page functions with enhanced capabilities.

Highlights search terms automaticallySupports popular search engines100% private, on-device processing
📊 Productivity
(20)
free
8
Highlights: PDF Reader & Notes
Highlights: PDF Reader & Notes
Highlights: PDF Reader & Notes
Edit Research Documents/Books
Free

This app is a fast and lightweight PDF reader designed for research. It allows users to read, highlight, and annotate documents, and then extract this information into organized notes. Advanced features include table data extraction, text recognition, and smart copying of annotations into various formats.

Read and browse PDF documentsHighlight, underline, and strikethrough textAdd comments and sticky notes
📊 Productivity
(1.6K)
freemium
9
Notability: AI Notes & Planner
Notability: AI Notes & Planner
Notability: AI Notes & Planner
Daily notebook & study journal
Free

Capture, organize, and enhance your thoughts with a versatile digital notebook. Seamlessly blend handwriting, typing, and multimedia to annotate documents, record lectures, and generate summaries. Ideal for students and professionals seeking to boost productivity and learning.

Handwritten and typed notesPDF and document annotationAudio recording and transcription
📊 Productivity
(452K)
freemium
10
Highlighter for Safari
Highlighter for Safari
Highlighter for Safari
Annotate & take notes on pages
$2.99

Annotate webpages directly within your Safari browser. Highlight text, add notes, and permanently save your edits for future review. All data is stored locally for simplicity and privacy.

Highlight text with multiple colorsAdd notes to webpagesPermanently save annotations
🔧 Utilities
(14)
free
11
Bear - Markdown Notes
Bear - Markdown Notes
Bear - Markdown Notes
Clean text editor for focus
Free

A beautiful and simple Markdown app for capturing, writing, and organizing your thoughts and ideas. It offers a distraction-free writing environment, flexible formatting, and powerful organizational tools like tags and tasks. Ideal for anyone looking to streamline their note-taking and creative processes.

Distraction-free writing environmentFlexible Markdown formattingTag-based organization
📊 Productivity
(6.8K)
freemium
12
Noteful: Notes & PDF Markup
Noteful: Notes & PDF Markup
Noteful: Notes & PDF Markup
Highlight. Write. Learn.
Free

This app revolutionizes paperless note-taking on iPad, allowing for handwritten notes, document annotation, and knowledge organization. It offers a fluid writing experience, PDF markup, powerful tagging, and audio recording synced with notes.

Handwritten notes with Apple PencilPDF and document annotationOrganize notes with tags
📊 Productivity
(23K)
freemium
13
Kilonotes-Notes & Mark up PDF
Kilonotes-Notes & Mark up PDF
Kilonotes-Notes & Mark up PDF
Handwritten Notes, PDF Editing
Free

This app offers a digital notebook experience for handwritten notes, PDF annotation, and study organization. It features freehand drawing, text extraction, AI assistance for learning, and customizable templates to enhance productivity and learning.

Handwritten note-takingPDF annotation and markupAI assistant for learning
📊 Productivity
(4.9K)
free with in-app purchases
14
Word document
Word document
Word document
by NeonApps
Free

Create, edit, and manage Word documents with a user-friendly interface. Offers text formatting, image insertion, and conversion to PDF. Easily search, organize, and access recent files.

Word document editing and creationRich text formatting optionsInsert images from camera or gallery
📊 Productivity
(55)
free with in-app purchases
15
Snaplight - Photo Highlighter
Snaplight - Photo Highlighter
Snaplight - Photo Highlighter
by Tanner Christensen
Free

Easily highlight important elements in photos and screenshots to make your message clear and details stand out. This app offers quick editing with custom fades, vibrant colors, and smart text highlighting. Share your enhanced visuals effortlessly.

Highlight anything in secondsCustomizable fades and blur13+ vibrant color options
🌟 Lifestyle
(19)
free with in-app purchases
16
Black Highlighter: Redact Text
Black Highlighter: Redact Text
Black Highlighter: Redact Text
Censor & secure screenshots
Free

Easily hide sensitive information in photos and screenshots. The Magic Highlighter automatically detects text and covers it perfectly, ensuring no details are missed. Advanced features allow for automatic redaction of specific information and custom shortcuts for streamlined workflows.

Magic Highlighter for automatic text detectionMultiple color options for redactionImport images from Photos
📷 Photo & Video
(86)
free with in-app purchases
17
iSilo
iSilo
iSilo
by DC & Co.
$9.99

Read various document formats including iSilo, Palm Doc, and plain text. Access a vast library of content, organize your files, and customize viewing options for a personalized reading experience. Transfer documents easily via USB, Wi-Fi, or web download.

Supports iSilo, Palm Doc, and plain text formatsExtensive document library and creation toolsOrganize documents with categories and favorites
📊 Productivity
(50)
free
18
PDF Cabinet
PDF Cabinet
PDF Cabinet
Read, Annotate, Collaborate
Free

This application offers a streamlined PDF experience for reading and annotating documents. It focuses on essential features with an intuitive interface, making it easy to mark up PDFs, share annotations, and collaborate in real-time with others. Optimized for performance, it handles large documents efficiently.

Effortless PDF annotationIntuitive user interfaceFast document review with thumbnails
📊 Productivity
(56)
free
19
iAnnotate 4 — PDFs & more
iAnnotate 4 — PDFs & more
iAnnotate 4 — PDFs & more
A better way to markup
$9.99

This app allows users to read, annotate, and share various document types including PDFs, Office files, images, and web pages. It offers a wide range of annotation tools, cloud storage integration, and advanced features for efficient document management and markup.

Annotate PDFs, Office files, images, and web pagesExtensive annotation tools (pen, highlighter, typewriter, stamps)Cloud storage integration (Box, Dropbox, Google Drive, OneDrive)
📊 Productivity
(8.9K)
paid
20
Drawboard PDF Annotate, Markup
Drawboard PDF Annotate, Markup
Drawboard PDF Annotate, Markup
Write & Type on PDFs and Notes
Free

Enhance your PDF workflow with powerful annotation and markup tools. This app offers a dynamic and intuitive experience for editing, drawing, and adding text to your documents. Access your work across multiple devices and collaborate in real-time.

Dynamic PDF annotation toolsCross-platform access and cloud syncReal-time collaboration
📊 Productivity
(1.8K)
free with in-app purchases

FAQ about Highlighter Document

What are the best highlighter document apps for iPhone?
LiquidText tops our highlighter document apps ranking as of July 2026, with a 4.6-star average from 6.4K App Store ratings, and it's free to download.
Yes — 15 of the top highlighter document apps we rank are free to download, including LiquidText and pdfFiller: edit PDF documents.
LiquidText has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 200+ highlighter document apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
LiquidText is an app designed for reviewing, gathering, and organizing information from various documents and webpages. It allows you to extract key facts, connect ideas across different sources, and annotate content, making it ideal for research, writing reports, or studying.
Key features include importing documents (PDF, Word, PowerPoint) and webpages, pulling excerpts into a workspace, adding notes, connecting ideas with 'ink links', comparing document sections side-by-side, and searching across all imported content. Some advanced features require a paid upgrade.