An AI study buddy that quizzes you on any subject
ChatSim is your personal AI study buddy. Enter a subject, topic and grade level, and the AI teacher quizzes you one question at a time, gives hints when you're stuck, and finishes with a grade and a per-topic mastery breakdown.
- Works for any subject — science, maths, history, languages and more
- Adapts to your grade level, from primary school to college
- Hints along the way when you get stuck
- A grade plus mastery for each sub-topic
- Speak your answers with the microphone or type them
How the AI study buddy works
Pick a subject, type the topic you're revising and your grade level. The AI then quizzes you one question at a time — just like a friend testing you before an exam.
After each answer you get quick feedback, and at the end you see what you've mastered and what to review.
Why revise with an AI study buddy?
Being quizzed is active recall — research shows it cements knowledge far better than re-reading. Practise as much as you want, whenever you want.
Frequently asked questions
Does it cost anything?
No, ChatSim is free during beta. You connect your own AI key (OpenAI, Claude or Gemini), so there's no subscription.
Which subjects does it work with?
Any subject. You type the subject and topic yourself, and the AI tailors the questions.
Is it suitable for high school and college?
Yes. You set the grade level and the questions adapt accordingly.
Can I get help when I'm stuck?
Yes. With hints enabled, you can ask for a small nudge toward the answer.