Marginstudy

Marginstudy is a Mac native application designed to help you work through dense technical PDF textbooks methodically. Rather than treating pages or paragraphs as the primary unit, it lets you reason through individual words, sentences, and lines while recording your thoughts in a friction-free interface.

The app focuses on deep comprehension of mathematical and computer science material by enabling you to annotate and reflect on specific passages without the overhead of traditional note-taking apps.