Class notes end up scattered across too many apps and formats

Problem Description

During lectures, I take notes in different ways depending on the situation: handwritten notes, typed documents, photos of the board, or quick voice notes. Over time, these notes get scattered across multiple apps and folders. When exam time comes, it becomes hard to find all notes related to a single topic. Even when I know I wrote something down, I often don’t remember where or in what format. Existing note-taking apps are powerful but assume a single input method. There is no simple way to unify notes from different sources into one clear, searchable structure per course.