Show HN: Penmentor – Claude marks up your handwritten math like a teacher
Penmentor, announced on Hacker News, is an application that leverages Anthropic’s Claude model to analyze and annotate handwritten mathematical work. Users can upload scans or photos of their notes, and the AI provides step‑by‑step feedback, highlighting errors and offering corrections similar to a classroom teacher. The tool aims to assist students in improving problem‑solving skills.