An AI tutor at your level
Stuck on a question? Get an instant explanation pitched to your exact grade — worked steps, not just the answer.
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Grades 6-12 academic prep
Ace your SAT, ACT & AP exams
Practice with AI-powered adaptive quizzes, get instant explanations, and track your mastery across every core subject. Free for all students.
6-12Grade range
10Subjects
SAT / ACT / APExam tracks
$0To start
The catalog
What do you want to study?
Core subjects and exam tracks for every grade from middle school through senior year.
How it works
Built for students, trusted by parents
Progress you can actually see
Mastery tracking shows which topics are solid and which need another pass — so study time goes where it counts.
SAT, ACT & AP ready
Practice real exam-style questions with full-length mocks and detailed feedback, so test day holds no surprises.
FAQ
Questions, answered
What grades and exams does Koydo Prep cover?
Koydo Prep covers grades 6 through 12 — middle and high school core subjects plus dedicated SAT, ACT, and AP exam preparation.
Is it really free to start?
Yes. The free plan gives every student 10 practice questions a day with score tracking — no credit card required. Premium unlocks unlimited practice, the AI tutor, and full mock exams.
How does the adaptive practice work?
Questions adjust to your performance: get a topic right and it advances, miss it and Koydo Prep gives you more practice and a clear explanation before moving on.
Can parents see how their student is doing?
Yes. Parents get a clear view of subjects studied, mastery levels, and time on task, so they can support without hovering.
Ready to start?
No credit card needed. Free practice for every grade level — upgrade only when you want more.
Start practicing free