MarginNote 4 is a comprehensive tool designed to boost cognitive learning processes and efficiency. It caters to various stages of learning, from previewing to memorization, by incorporating advanced techniques and theories. The software provides dynamic space for critical thinking with features like Quick Extend Note and Multiple Handwriting Layers. Users can engage in active learning through Study Set, Book Compile, and Bi-article comparison, supported by a distraction-free mode and a high-performance OCR engine.

Moreover, MarginNote 4 offers visual learning tools such as Mind Map and Concept Diagram, enabling users to connect and reflect on information effectively. It also facilitates strategic note-taking with features like Custom Toolbar, Content Detection, and Zettelkasten support. The software promotes long-term memory retention through Spaced Repetition and allows for demo, sharing, and collaboration across platforms.