Annotato is an application that provides more than just writing and taking down notes!

Annotating your lecture notes while listening to lectures or while doing revision will never be the same again. Our application supports creating annotations from handwriting, markdown, and more. You can also share documents with your friends and collaborate with them in real-time.

You can view annotations as an overlay on the PDF file as a minimized version for you to easily skim through the entire document to get a sense of the notes you carefully made, or you can tap a particular annotation to expand it to display more information.