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Best File Reader Annotations Apps

200+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated May 2026

GoodReader PDF Editor & Viewer is the household name in file reader annotations, but it's far from the only option. We track 200+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for File Reader Annotations

GoodReader PDF Editor & Viewer#1

GoodReader PDF Editor & Viewer by Good.iWare, Inc.

PDF Annotator, File Manager
Editor's Choice
📊 Productivity
4.7😊(14K ratings)
$5.99In-App Purchases
#17in Productivity
GoodReader PDF Editor & Viewer screenshot 1
GoodReader PDF Editor & Viewer screenshot 2
GoodReader PDF Editor & Viewer screenshot 3

This app offers robust PDF editing and viewing capabilities, alongside comprehensive file management tools. It allows users to annotate PDFs, manage files from various cloud services, and secure sensitive data with advanced encryption. Enjoy a superior reading experience with features like PDF Reflow and split-screen viewing.

What We Love

  • 🚀 Excellent for reading and annotating PDFs
  • 📚 Powerful file management and organization
  • 💻 Seamless integration with cloud storage
  • 🎨 Customizable reading experience

Room to Improve

  • 🔒 Subscription model for some features
  • 🔀 Cluttered interface after recent update
  • 🐛 Occasional crashes and stability issues
PDF Reader - Editor & Viewer#2

PDF Reader - Editor & Viewer by Kdan Mobile Software LTD

Editor, Converter, OCR
Strong Contender
🔧 Utilities
4.5😐(2.9K ratings)
FreeIn-App Purchases
PDF Reader - Editor & Viewer screenshot 1
PDF Reader - Editor & Viewer screenshot 2
PDF Reader - Editor & Viewer screenshot 3
PDF Reader - Editor & Viewer screenshot 4
PDF Reader - Editor & Viewer screenshot 5
PDF Reader - Editor & Viewer screenshot 6

Edit, convert, and manage PDF documents on your mobile device. This app allows you to directly edit text, scan documents, fill out forms, and secure your files with passwords and watermarks. It also supports OCR to extract text from scans and convert PDFs to various formats.

What We Love

  • 👍 Good app
  • 🚀 Fast and efficient
  • 📚 Useful for reading PDFs
  • 🔒 Secure file storage

Room to Improve

  • 🐛 Crashes and freezes
  • 🔐 Locked files behind paywall
  • 💰 Expensive subscription
Documents: File Manager & Docs#3

Documents: File Manager & Docs by Readdle Technologies Limited

Converter. Downloader. Reader.
Worth Considering
📊 Productivity
4.8😊(617K ratings)
FreeAdsIn-App Purchases
#54in Productivity
Documents: File Manager & Docs screenshot 1
Documents: File Manager & Docs screenshot 2
Documents: File Manager & Docs screenshot 3
Documents: File Manager & Docs screenshot 4
Documents: File Manager & Docs screenshot 5
Documents: File Manager & Docs screenshot 6

This app is a comprehensive file manager and document editor for mobile devices. It allows users to organize, edit, convert, and annotate various file types, including PDFs, Office documents, and audio/video files. It also features transcription, scanning, and cloud integration.

What We Love

  • 💯 Excellent file management capabilities
  • 🚀 Seamless integration with cloud services
  • 📚 Versatile document viewer and editor
  • 🎵 Reliable offline music player

Room to Improve

  • 🐛 Occasional crashes and bugs
  • 🔒 Concerns over in-app subscription model
  • 🔍 Inconsistent search and file management functionality

More File Reader Annotations apps to explore

4
PDF Reader Pro Edition®
PDF Reader Pro Edition®
PDF Reader Pro Edition®
Annotate,edit & sign PDFs
$1.99

This powerful application allows users to read, manage, edit, and annotate PDF files on iOS devices. It offers real-time online collaboration, form filling, and advanced annotation tools. Create, organize, and secure your PDF documents with ease.

Real-time online collaboration and chatFillable PDF formsExtensive annotation tools (highlight, notes, signature)
💼 Business
(1.7K)
paid
5
MobiPDF・PDF Text Editor・Reader
MobiPDF・PDF Text Editor・Reader
MobiPDF・PDF Text Editor・Reader
Edit, Convert Documents・Expert
Free

Edit, create, and secure PDF documents on your mobile device. Scan paper documents to editable PDFs, recognize text with OCR, and fill or sign forms. Convert between PDF and other formats, and protect sensitive files with passwords.

Scan documents to editable PDFsRecognize text with OCREdit text, images, and signatures
📊 Productivity
(6.9K)
free with in-app purchases
6
PDF Editor: Read, Scan & Sign
PDF Editor: Read, Scan & Sign
PDF Editor: Read, Scan & Sign
Markup, PDF Converter & Reader
Free

Edit, read, scan, and convert PDF documents with a comprehensive suite of tools. Annotate, draw, and sign your files with ease. This app offers offline functionality and supports collaboration.

Edit and annotate PDF documentsScan physical documents to PDFConvert various file types to PDF
💼 Business
(6.9K)
free with in-app purchases
7
PDF Editor ®
PDF Editor ®
PDF Editor ®
Edit, Reader Converter Maker 7
Free

Edit, sign, and convert PDF documents directly from your mobile device. Scan physical papers into editable PDFs, annotate text, and fill out forms on the go. All your documents are stored locally for privacy and can be easily shared.

Edit PDF filesSign documentsConvert scanned papers to PDF
💼 Business
(28K)
free with in-app purchases
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
PDF Reader Pro: Scan & Convert
PDF Reader Pro: Scan & Convert
PDF Reader Pro: Scan & Convert
Scan & Edit PDF Fast and Easy
Free

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to quickly view, scan, edit, and convert PDFs, with features like OCR, annotation, and secure file management. It's designed for efficient handling of all your PDF needs on iOS devices.

Fast PDF reader and viewerAdvanced document scanner with OCRPowerful PDF converter
🔧 Utilities
(703)
free with in-app purchases
10
PDF Editor ,PDF Book Reader ®
PDF Editor ,PDF Book Reader ®
PDF Editor ,PDF Book Reader ®
PDF App,PDF Scanner, Converter
Free

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.

Read and edit PDFsAnnotate and markup documentsFill forms and add digital signatures
🔧 Utilities
(22K)
free with in-app purchases
11
ReadEra – book reader pdf epub
ReadEra – book reader pdf epub
ReadEra – book reader pdf epub
Read books & PDF files easily!
Free

This app allows you to read and listen to books and documents in various formats, including PDF and EPUB. It offers text-to-speech functionality, customizable reading settings, and a built-in book manager for your library. Enjoy an ad-free and registration-free reading experience.

Multi-format ebook support (EPUB, PDF, MOBI, DOCX, etc.)Text-to-Speech (TTS) for listening to booksAd-free and registration-free experience
📚 Books
(222)
free
12
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
(6.8K)
subscription
13
PDF Reader - Editor & Scanner
PDF Reader - Editor & Scanner
PDF Reader - Editor & Scanner
Read, Edit, Sign, Scan PDF
Free

This app provides comprehensive PDF management, including reading, editing, and scanning. It uses AI for intelligent document recognition, summarization, and conversion to various formats. Securely store and access your files in the cloud or from popular services.

AI-powered PDF editing and summarizationIntelligent document scanning with OCRConvert between PDF and other file formats
🔧 Utilities
(511)
free with in-app purchases
14
Text Viewer - txt file viewer
Text Viewer - txt file viewer
Text Viewer - txt file viewer
text reader, txt file reader
Free

This app allows you to view text-based novels and e-books directly on your smart devices. Easily transfer files from your PC via Wi-Fi, import from cloud storage, or use FTP and iTunes. Customize your reading experience with adjustable fonts, colors, and page transitions.

View TXT filesWi-Fi file transfer from PCCloud app import (iCloud, Dropbox, etc.)
📚 Books
(167)
free with in-app purchases
15
PDF Viewer by Nutrient
PDF Viewer by Nutrient
PDF Viewer by Nutrient
Fill Forms, Sign, Edit, Redact
Free

Easily view, search, and annotate PDF documents on your iPhone and iPad. Import files from cloud services, fill out forms, add signatures, and organize your documents. Advanced features like redaction and combining documents are available with a Pro subscription.

View and search PDFsAnnotate with highlights and notesSign documents digitally
📊 Productivity
(9.1K)
freemium
16
PDF Reader Pro – Lite Edition
PDF Reader Pro – Lite Edition
PDF Reader Pro – Lite Edition
Comment,Edit,Sign,Form,OCR PDF
Free

This app offers comprehensive tools for managing PDF documents on mobile devices. It allows users to read, edit text and images, annotate, fill forms, convert to various formats, compress files, and perform OCR. Organize, protect, and share your PDFs with ease.

Read PDFs with multiple viewing optionsEdit PDF text and imagesAnnotate with highlights, notes, and drawings
💼 Business
(436)
free with in-app purchases
17
ES File Explorer
ES File Explorer
ES File Explorer
Browse & Music, Docs
Free

Manage local and network files with this comprehensive tool. It offers file transfer, compression, built-in media players, cloud storage integration, and editing capabilities for various document and code formats.

File management and sortingWiFi and face-to-face file transferZIP, RAR, 7Z compression/decompression
📊 Productivity
(15K)
free with in-app purchases
18
KyBook 3 Ebook Reader
KyBook 3 Ebook Reader
KyBook 3 Ebook Reader
Epub, Mobi, Djvu and More
Free

This app is a versatile e-book reader and cataloger supporting numerous formats like EPUB, MOBI, and PDF. It offers a comfortable reading experience with customizable options, powerful annotation tools, and seamless cloud storage integration. Organize your library with tags, collections, and a handy cataloguer.

Supports all major e-book formatsOPDS catalog accessComfortable reading mode with themes
📚 Books
(4.2K)
free with in-app purchases
19
Goodnotes: AI Notes, Docs, PDF
Goodnotes: AI Notes, Docs, PDF
Goodnotes: AI Notes, Docs, PDF
Note taking, canvas & work app
Free

Capture ideas, enhance productivity, and unlock insights with advanced AI features. This app offers tools for professionals, students, and creatives, including infinite whiteboards, AI-powered transcription and summarization, and customizable digital notebooks.

AI-powered transcription and summarizationInfinite whiteboard canvasDigital notebooks with customizable templates
📊 Productivity
(431K)
free with in-app purchases
20
PocketBook Reader
PocketBook Reader
PocketBook Reader
PDF, EPUB, FB2, Audiobooks
Free

This app is a versatile reader supporting 26 book and audio formats, including EPUB, PDF, and audiobooks. It offers features like PDF reflow, text-to-speech, cloud synchronization, and extensive customization options for a comfortable reading experience.

Supports 26 book and audio formatsPDF Reflow functionText-to-speech engine
📚 Books
(8.8K)
free with in-app purchases

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