A free AI tutor that adapts to you
ChatSim works as a personal AI tutor: you choose the subject and level, and it quizzes you, explains where you went wrong, and tracks your progress over time.
- Personalised questions for your subject and level
- Short explanations when you get something wrong
- Hints on demand
- A grade and per-topic mastery breakdown
- Progress saved so you can see yourself improve
Like a tutor, available anytime
You don't need to book a session or wait. The AI tutor is ready whenever you want to practise, for as long as you want.
Built around how people actually learn
By quizzing you and giving immediate feedback, ChatSim uses active recall — the method shown to build lasting understanding.
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.
Is it a real teacher?
It's an AI that plays the role of a tutor — great for practice and revision, but not a replacement for a qualified teacher.
Which subjects and levels?
Any subject, from primary school to college. You set the level.
Can I get hints?
Yes, you can enable hints for a nudge toward the answer.