10 Best PDF Reader Apps For iPhone & iPad

PDF (Portable Document Format), is one of the most common file formats used in the world today. Its compatibility with different devices and platforms is one of the reasons why the PDF format is mostly used. A PDF document is usually non-editable, it maintains the original format and the file is viewed the way it is intended. Having a PDF reader application in smartphones and mobile devices have become a necessity, especially for iPads and iPhones that are commonly used for reading content and business purposes. However, choosing the best iPhone PDF reader can be challenging since there are so many PDF readers to choose from. To save you the stress and trouble of deciding on the PDF reader to install on your device and also help you narrow your selection, we have created a list of the 10 best iPad & iPhone PDF reader apps.

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Adobe Acrobat Reader

This PDF reader developed by Adobe is very popular and can be used on different platforms. Just so you know, the PDF format was developed by Adobe way back 1993. You can use Adobe Acrobat Reader on your iPad and iPhone to read and annotate files. You can also use this app to open different PDF file formats like fillable forms, password-protected PDFs and PDF portfolios. However, editing PDF text is impossible. This PDF reader app by Adobe is ideal for users who want to view PDF documents and perform simple annotations. The desktop version of this application is powerful and comes with different advanced functions. Adobe reader app can be downloaded on your iPad and iPhone and used to view all kinds of PDFs.

adobe acrobat reader app

Foxit PDF Reader

Foxit PDF reader is the only iPhone PDF reader app that can compete directly with Adobe Acrobat Reader. This app does more than opening PDF files for viewing. Besides its primary function as a PDF reader, Foxit PDF reader comes with additional features like document scanning, split view and slide over. The apps have two versions; the free version with limited functionalities (like viewing PDF files, highlighting, adding comments, etc.) and the paid version with full access to all features on the app. Foxit PDF reader is more of a business-oriented PDF reader than an eBook reader; it is a user-friendly application with great features plus advanced editing functions.

foxit pdf reader app

Documents by Readdle

This PDF reader has dual functions; it can serve as a PDF viewer and a file manager. Until the release of iOS 11, iPhones lacked an inbuilt file manager application, making this application useful. With Readdle, users can import PDFs from the cloud, computer or download from the internet and save on your device to view later. Documents by Readdle has powerful features and a user-friendly interface, making it an important tool for iPhone and iPad users. Besides viewing PDFs on your device, you can use this amazing app to organize your files.

pdf reader documents by readdle


This is an in-built PDF reader application in iPad and iPhone. Apple, however, revamped iBooks in iOS 12 and changed the app name to Books. iBooks can be used to read PDF and EPUB files. You can also use iTunes to sync books across your devices. With this app, you can take notes, highlight texts, add bookmarks and even download books from iBooks Store. iBooks PDF reader is simple, and it has an auto-night theme that makes reading at night easy. This app is ideal if you want to read ebooks on your iPhone and iPad. Apple is yet to release the revamped version of this app, and it might come with some fantastic features.

ibooks pdf reader app


This PDF reader application is designed with some fantastic features to increase your productivity. With this complete PDF reader, you can view, annotate, edit, convert and also sign PDF files. You can use Dropbox, iCloud Drive, One Drive, Google Drive, and Box to access PDFs. As one of the best free PDF reader applications, PDFelement comes endowed with advanced features that offer users a better reading and viewing experience. To unlock premium features in this app for free, all you need to do is sign in with your Wondershare ID.

pdf element pdf reader app

PDF Reader

One of the best online PDF reader applications with amazing features as well as PDF viewing abilities is PDF Reader developed by Kdan Mobile. PDF Reader – Document Expert has a scanning mode that allows users to scan and create PDF files, and it also supports password-protected PDFs. The app’s annotation tools are superb; you can choose from colors and fonts. This amazing app is a great PDF editor and reader with capabilities to manage and transfer files. Although this app is not free, investing in it is not a bad idea given its amazing features.

pdf reader document expert

Google Playbooks

Play Books by Google is a popular PDF reader application for Android devices; the iOS version of this app, however, is very reliable. Users can upload their EPUB and PDF files in the library, and the files will sync across their devices. You will find a large collection of new and classic books on the app’s marketplace; thus, this app is a must-have for iPhone users who love to read novels. Google Play Books is a reliable PDF reader with basic functions. The recent update of this PDF reader comes with audiobooks support, making the app more useful.

google play books pdf reader

Xodo PDF Pro

This is a free iPhone app with basic functions that can be used to view, annotate and edit PDF files. Xodo PDF pro is suitable for people who love to use their iPhone in editing official documents. Its cross-platform support is another reason why this app is worth downloading. The app developers successfully incorporated little and basic features in the application, making it a simple PDF reader.

xodo pdf reader app

KyBook 2 Ebook Reader

If you purchased your iPad for the purpose of reading and you are searching for a nice PDF reader, then KyBook 2 is the best PDF reader for the job. KyBook 2 PDF reader for iOS devices supports different eBook formats such as EPUB, PDF, RTF, FB2, DJVU, MOBI, CBR, AZW3, CBZ, CBT, PDF, M4A, M4B, MP3. Users can mark annotations and convert text to audio using the built-in text-to-speech tool in the app. This app is an all-in-one PDF reader comes with a useful cataloguer and flexible mode settings that offer users a fantastic reading experience. If you are an avid reader, you will enjoy this app to the fullest when you install it on your device. You can download KyBook 2 on your device from the App Store free of charge.

kybook2 pdf reader

PDF Pro 3

PDF Pro 3 is an important app to have on your device if you are seeking an iPhone PDF reader app endowed with numerous features. With PDF Pro 3, you can read, edit and annotate PDF files. In the PDF file, you can use this app to add comments, highlight text, insert shapes or draw figures. Besides these, you can also insert photo annotations or voice-recordings in PDFs. Because of the interesting features offered by this app, it is one of the best iPhone and iPad PDF reader application. The app has a free version that comes with some interesting features and a premium version that grants you access to additional features you will love.

pdf pro 3 reader app

The iPhone and iPad PDF readers mentioned in this post allows you to do more than opening or viewing PDF files; you can use some of these apps to edit PDFs as well. We believe we have narrowed your search for the best PDF reader app to use on your iPhone or iPad, you can now select the app that’s more suitable for you.
If you have any question, comment, or you feel we’ve skipped an interesting iOS PDF reader, please let us know in the comment section below.

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