Your ACT prep, made simple

Ace the ACT with prep that adapts to you

Practice real exam-style questions, get instant explanations, and walk into test day confident. Free to start — no card required.

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Build your ACT readiness

Exam-style practice

Work through exam-style ACT questions with a clear, written explanation for every answer — so you learn the why, not just the what.

Your AI tutor, on call

Stuck on a concept? Ask anytime and get a plain-English explanation, a worked example, or fresh practice in seconds.

See what to work on next

Review your ACT practice accuracy and subject-level gaps, then choose the next focused session.

Full, timed mock exams

Sit realistic, timed practice exams covering English, Math, Reading, optional Science/Writing — so the real thing feels familiar.

Practice that targets your gaps

Your practice adapts to you — every question is chosen to strengthen exactly what you need next.

Free to start

Get 10 practice questions every day on the free plan. Upgrade anytime for unlimited practice and full mock exams.

Frequently asked questions

Is it really free?: Yes. You can practice up to 10 exam-style ACT questions every day, review your results, and explore your knowledge graph at no cost. Upgrade to Premium for unlimited practice and full mock exams.
Is this affiliated with the official ACT test?: No. Koydo is an independent study aid. We are not affiliated with, authorized, or endorsed by any official testing authority, and all trademarks belong to their respective owners.
What do I get?: ACT practice with post-answer explanations, AI tutoring, timed mock exams, a personalised study plan, and readiness feedback.
Who is this for?: Anyone preparing for the ACT — whether you are just getting started or fine-tuning in the final weeks before test day.
How do I start?: Create a free account and jump straight into practice. There is no card required to begin, and you can upgrade whenever you are ready for more.

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Build your ACT readiness

Exam-style practice

Work through exam-style ACT questions with a clear, written explanation for every answer — so you learn the why, not just the what.

Your AI tutor, on call

Stuck on a concept? Ask anytime and get a plain-English explanation, a worked example, or fresh practice in seconds.

See what to work on next

Review your ACT practice accuracy and subject-level gaps, then choose the next focused session.

Full, timed mock exams

Sit realistic, timed practice exams covering English, Math, Reading, optional Science/Writing — so the real thing feels familiar.

Practice that targets your gaps

Your practice adapts to you — every question is chosen to strengthen exactly what you need next.

Free to start

Get 10 practice questions every day on the free plan. Upgrade anytime for unlimited practice and full mock exams.

Frequently asked questions

Is it really free?

Yes. You can practice up to 10 exam-style ACT questions every day, review your results, and explore your knowledge graph at no cost. Upgrade to Premium for unlimited practice and full mock exams.

Is this affiliated with the official ACT test?

No. Koydo is an independent study aid. We are not affiliated with, authorized, or endorsed by any official testing authority, and all trademarks belong to their respective owners.

What do I get?

ACT practice with post-answer explanations, AI tutoring, timed mock exams, a personalised study plan, and readiness feedback.

Who is this for?

Anyone preparing for the ACT — whether you are just getting started or fine-tuning in the final weeks before test day.

How do I start?

Create a free account and jump straight into practice. There is no card required to begin, and you can upgrade whenever you are ready for more.