Koydo Challenges — Practice, Compete, and Master Any Subject
Turn studying into a game you actually want to play. Practice with timed challenges, sit full mock exams, and let your AI tutor explain every answer.
Free to start · No credit card needed
Practice that sticks
Quick timed rounds and questions targeted at your weak spots.
Full mock exams
Sit realistic, timed tests and see exactly where you stand.
An AI tutor on call
Ask anything and get a clear explanation, any time you're stuck.
Compete with peers
Challenge friends, climb the leaderboard, and learn faster together.
Frequently asked questions
Is Koydo Challenges free?
Yes. You can practice questions, build flashcards, and join challenges for free every day. Premium unlocks unlimited mock exams, the full AI tutor, study rooms, and your personalised study plan.
What do I get?
Timed practice and competitions, full-length mock exams, spaced-repetition flashcards, an AI tutor that explains every answer, and a progress tracker so you always know where you stand.
Who is it for?
Anyone who learns better with a goal in sight — students preparing for an exam, friends pushing each other to improve, and self-learners who want practice that actually sticks.
How do I start?
Tap Start a Challenge, pick a subject, and your first questions are ready in seconds. No setup, no credit card — just press play.
Can I compete with friends?
Yes. Create a peer challenge, share the link, and race the clock together. Everyone sees the leaderboard, and your scores feed straight into your progress.