No teacher needed. Amigo quizzes you from open textbooks, explains every answer, and brings back what you got wrong right when you are about to forget it.
Type any topic. The AI writes questions from my library, marks your answers and explains your mistakes. Your topic and answers go to an AI service; nothing else about you does.
Everything you got wrong is kept here, with the right answer and why. Answer one correctly later and it leaves the list.
Your progress is stored only in this browser. Amigo's server never sees who you are or how you did.