Penmentor is an AI mentor that corrects your written math visually. You work by hand in xournal++, press a key, and Claude, Gemini or GPT marks your work on the screen like a teacher with coloured pens, gives hints instead of answers, and shows the idea behind the slip as a manim-style animation.
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Get corrections drawn on the page of handwritten work instead of in a chat transcript.
Receive a ladder of nudges that lead you to the step rather than the final result.
Ask for the concept behind a mistake and watch a short generated animation of it.
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