Annotate and Sign PDF Documents with These Android Apps

By Steve McFarlane

Do you need to go paperless or have the tools to allow your customer’s to fill out an important document, sign and immediately email it to the office while you are still on the road? The following Android apps will allow you to annotate a PDF, fill out PDF forms and digitally sign a document with your Android phone or Tablet.

RepliGo Reader ($4.99)

This app allows the viewing and annotating of PDF documents. Use the app to highlight, underline and cross-out text; add sticky notes, ovals, rectangles, arrows, lines and freehand drawings. RepliGo Reader also integrates with Gmail, Dropbox, Evernote and various other applications. Some of this app’s best features include the ability to:

  • View and annotate PDF files from your email, memory card, Dropbox, Evernote and the Internet
  • Add highlights, cross-outs, underlines, sticky notes, arrows, lines, ovals, rectangles and freehand drawings
  • Adjust colors, border thickness and the note for any PDF annotation
  • Read documents easily with reflowed text and night mode
  • Scroll quickly through pages by swiping or tapping on the edge of the screen
  • Navigate long documents using bookmarks, comments, document links, go to page, search and thumbnails
  • Click on email, map, phone and web hyperlinks to launch applications
  • Quickly zoom in and out by pinching or double-tapping columns, images or tables
  • Select text and copy it to the clipboard
  • Easily rotate documents into your preferred orientation
  • Open password protected PDF with an Android

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SignMyPad ($3.99)

Accept digital signatures and annotate PDF documents with this simple Android PDF app. You can use the app to load and read a PDF (from an email), add text, a date and a signature and email it back to the sender. This is perfect for real estate agents, lawyers and insurance agents and anyone for whom being able to accept digital signatures, while on the road, will increase productivity or speed up the rate at which deals are closed.

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ezPDF Reader ($1.99)

You will be hard pressed to find a better mobile PDF reader than ezPDF Reader. With its text-to-speech, and PDF annotation features this is more than your average Android PDF app. You will be able to view PDF files on your mobile with the assurance that the file will look the way it was intended.

The text-to-speech feature, allows you to view audio/video-enabled PDF ebooks (i.e. instructional manuals and children’s books), but could do well with audiovisual controls to better navigate media playback. In any case, the option to have the app read to you is a nice touch.

The app has quite a few features such as bookmarking, note taking, and handwriting annotation. A more comprehensive list of features includes the following:

  • Built-in Text-to-Speech (TTS) function
  • Play embedded video & audio
  • Text view with reflow function. Option for Night/Day Mode; able to change font size and color (text and background)
  • Thumbnail image view
  • Search (options for case sensitive, whole word or part, exact word matches)
  • Auto Fit/Zoom for multi-column articles and an option to remove white margins
  • Scroll lock/unlock
  • Able to select PDF text, save to clipboard, do a web search and share with other apps
  • Hyperlink support
  • Able to open password-protected PDF files
  • Intuitive bookmarking and bookmark viewing
  • Page navigation with thumbnail scroll images
  • Able to change reading direction to support Arabic, Chinese, Japanese & Hebrew documents
  • Trackball Support

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5 Responses to “Annotate and Sign PDF Documents with These Android Apps”


This app seems to be good alternative too.
Worth a try


Hi Steve,
It seems that you forgot to mention our app
qPDF Notes, an Android app that supports searching through documents, easy navigation and is very friendly for adding all kind of annotations (typewriter, sticky notes, graphical annotations).

Steve McFarlane

Thanks for the suggestion, I will have a look…


Since I wrote, qPDF Notes 2.2 has come out, with true PDF digital signatures. User chooses whether to create self signing certificate, or imports PKCS certificate file from a trust authority like Verisign or Thawte. And, user can create custom signature appearance, adding image such as company logo, and can sign with finger gesture.


steve i recently succesfully downloaded an office app for a kind of a cheapie android tablet but i didn t know what to do with it after it was downloaded. i would like to download magazines and books and then hightlite or underline certain parts. was able on wifes i pad but would likedo this on an android tablet. not a real competer guy, anything out there with instructions? would appreciate your help.

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