Retroter

Last semester, I watched my younger sister cry over her math exam. She had studied hard for weeks, yet she scored terribly. When I sat with her to review the paper, something struck me. She wasn’t getting the answers wrong because she didn’t know the formulas. She was getting them wrong because her thinking was flawed in very specific ways, small misunderstandings that snowballed into big mistakes. The worst part? The teacher only wrote “Incorrect” or gave a cross mark. There was no explanation of where her reasoning went off track or how to fix it. She felt defeated and lost. That night I thought: What if students could get more than just a grade? What if after every test, they received a clear map of exactly how their mind approached each question, where it went wrong, and targeted practice to repair that specific misunderstanding? That moment of watching my sister struggle became the spark for Retroactive Tutor. Retroactive Tutor turns every wrong answer into a breakthrough. It reconstructs a student’s thinking process, reveals the hidden misconceptions, and creates personalized “fix-it” exercises that strengthen their actual understanding, not just memorization. Because real learning doesn’t happen by seeing the correct answer. It happens when you finally understand why you got it wrong. This project is deeply personal. It was built with the belief that no student should feel stupid for making mistakes. Instead, every mistake should become a stepping stone to genuine mastery.

Built With

• ai
• hugging-face-(qwen/qwen2.5-14b-instruct)
• langchain
• next.js
• shadcn/ui
• supabase
• tailwind-css
• typescript
• vercel