MarginNote Pro is a powerful reading and study software app for Mac, iPad, and iPhone. By integrating a PDF/EPUB reader and multiple powerful study tools, MarginNote will enable learners to reorganize and connect knowledge from different aspects, then memorize and grasp it accordingly.
You can add notes directly at the page margin, so that the note editing area will not overlap with the book content at all. Text, voice, picture, sketching and many other forms of comments in note form are supported. You can add hashtags to notes to facilitate the connection of notes.