Lessons included
Work through English and math lessons that map to the ACT: clear explanations you can finish between classes.
Start a lesson
Practice quizzes
15-question concept quizzes help you drill weak areas in short sessions with immediate feedback.
Take a practice quiz
Full-length tests
Simulate test day with timed full sections so pacing and stamina feel familiar before the real exam.
Take a full-length test
Quiz & test timer
Use the built-in timer on quizzes and practice tests so every session matches real pacing and time pressure.
Practice with the timer
Study plans
Turn goals into a simple weekly plan so prep stays consistent without guessing what to do next.
Open your study plan
Progress tracking
See how you’re improving by concept and over time, so you know what’s working and what still needs reps.
View your progress
Leaderboard
Optional friendly competition helps you stay motivated alongside other students preparing for the ACT.
See the leaderboard
Reviews from students
Trusted by 3000+ students
I like using thirty-six.co for targeting those few screwups on the English section, stupid mistakes that drag me down. Watching a quick video on the topic, then practicing with quizzes here, has helped the most. Thank you for this tool.
I was recommended thirty-six on Reddit, took the September ACT as my first ever test, and got a 36 composite. Thanks and appreciation for building this.
Pricing & plans
Choose the plan that fits your practice
Monthly pricing shown; yearly billing is available on the pricing page.
Basic
Get started with core practice
- 1 free quiz per concept
- English and maths lessons
- Quiz & practice test timer
Premium
Unlimited depth for serious prep
- 3000+ practice questions
- English and maths lessons
- Quiz & practice test timer
- 20 full-length english practice tests
- Weekly study reminders
- Unlimited progress tracking
- Personalized study plan
- Leaderboard
Frequently asked questions
What is thirty-six?+
thirty-six is an ACT prep tool with concept-based quizzes, explanations, and progress tracking, built so you can practice in short sessions and focus on weak areas.
How long are quizzes?+
Each quiz is 15 questions, so you can finish one between classes or on a commute.
Can I try it for free?+
Yes. The Basic plan is free with limited quizzes per category and progress tracking, enough to see if the workflow fits you before upgrading.
Where do I manage billing?+
Use the in-app billing area or visit the pricing page to compare plans and upgrade when you're ready.
Get started for free today
Start making progress toward your target score.