Adobe Acrobat Reader

Adobe Acrobat Reader DC software is the free global standard for reliably viewing, printing, and commenting on PDF documents. (Portable Document Format)
It’s connected to the Adobe Document Cloud − making it easier than ever to work across computers and mobile devices.
PDF viewer can open and interact with all types of PDF content, including forms and multimedia.
The free Adobe Acrobat Reader PDF app is trusted by millions of people around the world.
Adobe Acrobat Reader is the free global standard for reliably viewing, signing, and commenting on PDF documents.

Features :

VIEW PDFs 
Quickly open and view documents, Search, scroll, and zoom in and out, Choose Single Page or Continuos scoll mode

ANNOTATE PDFs
Comment on PDFs using sticky notes and drawing tools.
Highlight and mark up text with annotation tools.
View and respond to annotations in the comments list.
Use Apple Pencil with iPad Pro for exceptional commenting precision.

WORK WITH OTHERS AND SHARE PDFs
Quickly access documents shared for viewing, review, or signature.
Collaborate with others by adding your comments to PDFs sent to you for review.
Receive activity notifications for files you’ve shared for viewing and review.
Track pending actions on documents shared with you.
Easily share PDFs with others by creating links you can send by email.

WORK WITH SCANNED DOCUMENTS
Easily access scanned PDFs that you’ve captured using the free Adobe Scan app.
Open your scans in Acrobat Reader to fill in, sign, review, and share.

FILL AND SIGN FORMS
Quickly fill out PDF forms by typing text into fields.
Use your finger or Apple Pencil to e-sign any PDF document.

STORE, ACCESS, AND PRINT FILES
Sign in to your free Adobe Document Cloud account to store and access files across devices.
Star files to keep important documents at your fingertips.
Connect to your Dropbox account and access other storage providers including iCloud Drive, Box, Microsoft OneDrive, and Google Drive.
Print documents from your device.

DARK MODE
Switch to dark mode in iOS 13 and change the background color of the app window. This is not only easy on the eye in low light, but may also prolong the battery life of your device.

CONNECT TO GOOGLE DRIVE
Access PDFs and other files stored on your Google Drive with ease.
Create, view, edit, combine, compress, export, share, and star Google Drive files directly in Acrobat Reader.

Click above link, Visit the site, download and Enjoy! its free!