Best Fileopen PDF Viewer Apps

216+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated July 2026

The best fileopen pdf viewer apps on iPhone average 4.4★ across 216+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Compare top Fileopen PDF Viewer Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1FileOpen PDF ViewerFileOpen PDF ViewerFree1.0★ (1)NoNoMay 2026
2Acrobat Reader: PDF EditorAcrobat Reader: PDF EditorFree4.7★ (632K)YesYesJul 2026
3CamScanner - PDF Scanner AppCamScanner - PDF Scanner AppFree4.8★ (1.8M)YesYesJul 2026
4PDF Viewer by NutrientPDF Viewer by NutrientFree4.6★ (9.1K)NoYesJul 2026
5pdfFiller: edit PDF documentspdfFiller: edit PDF documentsFree4.4★ (7.6K)NoYesJul 2026
6PDF Reader – PDFelementPDF Reader – PDFelementFree4.3★ (3.9K)NoNoJul 2026
7PDF Expert: Editor & ConverterPDF Expert: Editor & ConverterFree4.7★ (215K)YesYesJul 2026
8PDF Reader - Editor & ViewerPDF Reader - Editor & ViewerFree4.5★ (2.9K)NoYesJul 2026

Top Picks for Fileopen PDF Viewer

FileOpen PDF Viewer#1

FileOpen PDF Viewer by FileOpen Systems Inc.

View FileOpen encrypted PDFs
Editor's Choice
💼 Business
1.0(1 ratings)
Free
FileOpen PDF Viewer screenshot 1
FileOpen PDF Viewer screenshot 2

This application allows users to view PDFs that have been encrypted using FileOpen technology on their Apple devices. It provides a straightforward way to access secure documents on iPhones and iPads.

Acrobat Reader: PDF Editor#2

Acrobat Reader: PDF Editor by Adobe Inc.

Documents Editor & Converter
Strong Contender
💼 Business
4.7😞(632K ratings)
FreeAdsIn-App Purchases
#2in Business
Acrobat Reader: PDF Editor screenshot 1
Acrobat Reader: PDF Editor screenshot 2
Acrobat Reader: PDF Editor screenshot 3
Acrobat Reader: PDF Editor screenshot 4
Acrobat Reader: PDF Editor screenshot 5
Acrobat Reader: PDF Editor screenshot 6

This app is a powerful PDF tool for viewing, editing, annotating, and signing documents. It offers AI-powered features for summarizing and interacting with PDFs, along with robust conversion and security options. Collaborate on files and access your documents from anywhere.

What We Love

  • 🚀 Fast and efficient
  • 🔒 Secure document storage
  • 👍 Convenient for reading and annotating PDFs
  • 👍 Useful for students and professionals

Room to Improve

  • 🐛 Buggy and unreliable
  • 🔒 Overly intrusive login requirements
  • 💰 Expensive subscription model
CamScanner - PDF Scanner App#3

CamScanner - PDF Scanner App by INTSIG Information Co., Ltd

Document Scanner PDF Converter
Worth Considering
📊 Productivity
4.8😐(1.8M ratings)
FreeAdsIn-App Purchases
#6in Productivity
CamScanner - PDF Scanner App screenshot 1
CamScanner - PDF Scanner App screenshot 2
CamScanner - PDF Scanner App screenshot 3
CamScanner - PDF Scanner App screenshot 4
CamScanner - PDF Scanner App screenshot 5
CamScanner - PDF Scanner App screenshot 6

Transform your mobile device into a powerful portable scanner. Instantly scan, edit, and share documents in various formats like PDF, JPG, Word, and TXT. Features include OCR, e-signatures, and secure file management.

What We Love

  • 🚀 Efficient scanning and document management
  • 📁 Convenient cloud storage and backup
  • 🔍 Powerful OCR and document enhancement features
  • 🔧 Customizable scanning and editing options

Room to Improve

  • 🔒 Concerns about data privacy and security
  • 🤖 Inconsistent OCR and text recognition accuracy
  • 💰 Aggressive upselling and subscription model

More Fileopen PDF Viewer apps to explore

4
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
5
pdfFiller: edit PDF documents
pdfFiller: edit PDF documents
pdfFiller: edit PDF documents
Scan, fill, sign,make pdf docs
Free

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.

Edit PDF documentsEsign and fill out formsShare and collaborate on documents
💼 Business
(7.6K)
free with in-app purchases
6
PDF Reader – PDFelement
PDF Reader – PDFelement
PDF Reader – PDFelement
PDF Editor & Viewer, PDF Maker
Free

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

Liquid Mode for optimized mobile readingAnnotation tools (pencil, text, highlighting)Handwritten signature insertion
📊 Productivity
(3.9K)
free
7
PDF Expert: Editor & Converter
PDF Expert: Editor & Converter
PDF Expert: Editor & Converter
Edit, Sign, Convert Documents
Free

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

Edit PDF text and imagesAnnotate and highlight PDFsFill out PDF forms
📊 Productivity
(215K)
free with in-app purchases
8
PDF Reader - Editor & Viewer
PDF Reader - Editor & Viewer
PDF Reader - Editor & Viewer
Editor, Converter, OCR
Free

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.

Edit PDF text directlyConvert PDF to Word, Excel, PPT, imagesOCR for text extraction from scans
🔧 Utilities
(2.9K)
freemium
9
PDF Reader & PDF Editor
PDF Reader & PDF Editor
PDF Reader & PDF Editor
Read, Edit, Sign PDF Files
Free

This app is a comprehensive tool for managing PDF documents. It allows users to quickly view, annotate, edit, and organize PDFs, as well as convert images to PDF. Advanced features like merging, splitting, and password protection are also available.

Fast PDF viewingPDF annotation and markupAdd e-signatures
💼 Business
(666)
free with in-app purchases
10
PDF Gear - PDF Editor & Reader
PDF Gear - PDF Editor & Reader
PDF Gear - PDF Editor & Reader
PDF Converter for acrobat PDF
Free

This app offers a comprehensive suite of tools for managing PDF documents on mobile devices. Users can easily view, annotate, edit pages, fill out forms, and digitally sign documents. It provides a free and unlimited experience for all its powerful PDF manipulation features.

View and print PDFsAnnotate with highlights, text, and drawingsOrganize pages (add, delete, rotate, extract)
💼 Business
(8.2K)
free
11
PDFelement: PDF Editor, Viewer
PDFelement: PDF Editor, Viewer
PDFelement: PDF Editor, Viewer
Edit,read,sign,annotate pdf
Free

This application offers comprehensive PDF management, including advanced editing, AI-powered summarization and translation, and efficient scanning with OCR. It helps organize, convert, and secure documents for work, study, and personal use.

AI Chat with PDFScan and OCRPDF to Office Conversion
📊 Productivity
(7.5K)
free with in-app purchases
12
PDF-редактор,Читалка PDF-книг
PDF-редактор,Читалка PDF-книг
PDF-редактор,Читалка PDF-книг
PDF-сканер и создатель
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
13
Browser and Documents Manager
Browser and Documents Manager
Browser and Documents Manager
Ultimate File Manager
Free

Manage and browse files and documents on your iOS device with a powerful download manager and web browser. Organize documents, extract archives, and work with over 100 formats. Supports iCloud, Camera Roll, and iTunes file sharing.

Full-featured download managerWeb browser with multiple tabsFile organization and editing
🔧 Utilities
(123K)
free
14
Power PDF - PDF Manager
Power PDF - PDF Manager
Power PDF - PDF Manager
Create, Modify, Secure PDF
Free

Create, modify, and secure PDF documents on your mobile device. Convert various file types and photos to PDF, scan documents with your camera, and manage files with a built-in file manager. View, annotate, and search within PDF documents with ease.

Create PDFs from DOC, XLS, PPT, TXT, and photosScan to PDF using cameraCombine, split, delete, and reorder PDF pages
🔧 Utilities
(1K)
free with in-app purchases
15
PDF Connect Free - View, Annotate & Convert PDFs
PDF Connect Free - View, Annotate & Convert PDFs
PDF Connect Free - View, Annotate & Convert PDFs
by Build to Connect, Inc.
Free

This app provides a comprehensive suite of tools for managing PDF documents. It allows users to view, edit, scan, convert, and fill out PDF forms. Seamless cloud integration and annotation features enhance productivity on the go.

Fast document renderingPDF editing and scanningPDF conversion
💼 Business
(370)
paid
16
PDF Export: Scan, Merge & Sign
PDF Export: Scan, Merge & Sign
PDF Export: Scan, Merge & Sign
Tools, Merge & Compress PDFs
Free

This app provides comprehensive tools for creating, editing, converting, and organizing PDF files on your mobile device. It offers features like scanning documents, merging files, adding watermarks, and even transcribing audio to text, all without requiring an internet connection.

Convert Word, Excel, JPG to PDFConvert PDF to Word, Excel, PPTEdit PDF text and images
💼 Business
(1.7K)
free with in-app purchases
17
PDF Maker : Converter,Scanner
PDF Maker : Converter,Scanner
PDF Maker : Converter,Scanner
Annonate,Scan,Split,Merge,Fax
Free

Transform your device into a powerful PDF creation and management tool. Easily convert various file types, scan documents, merge or split PDFs, and organize your files with robust management options. Share your creations seamlessly through multiple cloud services and export in various formats.

Create PDFs from images, web pages, and rich textScan documents to PDFMerge and split PDF files
💼 Business
(3.9K)
free with in-app purchases
18
PDF Reader - Easy Editor
PDF Reader - Easy Editor
PDF Reader - Easy Editor
Efficient PDF Processing Tool
Free

Transform your smartphone into a powerful PDF scanner and editor. Easily convert images and documents to PDF, or convert PDFs to other formats. Protect your files with encryption and share them securely.

Scan documentsConvert images to PDFConvert PDF to other formats
🔧 Utilities
(2.7K)
ad-supported
19
Flexi PDF
Flexi PDF
Flexi PDF
by JOIN SHIP TECH LIMITED
Free

Easily manage your PDF files with comprehensive tools for splitting, merging, and cropping. Save and export your processed documents in various formats for seamless sharing and use across devices.

Split PDF files into independent partsMerge multiple PDF files into oneCrop excess content from PDF pages
💼 Business
(17)
free
20
PDF it All Document Converter
PDF it All Document Converter
PDF it All Document Converter
Compress PDF Photos,Files,Word
Free

This app offers a comprehensive suite of tools for managing PDF documents. It allows users to compress, convert, edit, merge, split, sign, and protect PDF files. All operations are performed locally on the device for enhanced security.

Compress PDF filesConvert Office, Web, Photos to PDFEdit PDF pages (remove, rotate)
📊 Productivity
(7.9K)
free with in-app purchases

FAQ about Fileopen PDF Viewer

What are the best fileopen pdf viewer apps for iPhone?
FileOpen PDF Viewer tops our fileopen pdf viewer apps ranking as of July 2026, with a 1.0-star average from 1 App Store ratings, and it's free to download.
Yes — 20 of the top fileopen pdf viewer apps we rank are free to download, including FileOpen PDF Viewer and Acrobat Reader: PDF Editor.
FileOpen PDF Viewer has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 216+ fileopen pdf viewer apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
FileOpen PDF Viewer is designed for Apple devices, including iPhone, iPad, and iPod. It is compatible with iOS.
FileOpen PDF Viewer has an age rating of 4+, making it suitable for a wide range of users.