Skip to main content

Turn lectures into practice problems

Upload any lecture video or study material and get instant practice problems with AI feedback throughout your entire course.

Free for 7 days
Question from lecture
Explain the difference between correlation and causation in statistics.
Your answer
Correlation shows a relationship, while causation means one causes the other.
AI feedback
Good start! Add that correlation doesn't imply causation and give an example.
Professional workspace Website concept Web keys

Stop rereading. Start practicing.

Research shows active recall through practice problems improves retention by 50% compared to passive review.

Active learning beats passive review
Practice problems force your brain to retrieve information, strengthening memory.
Immediate feedback accelerates learning
Know instantly what you got right and where to improve.
Continuous practice builds mastery
Keep practicing concepts over time to move them to long-term memory.
Student studying at desk Desk setup Classroom

How it Works

Turn any lecture or study material into practice problems in three simple steps.

1
Apple Workspace

Upload your lecture

Drag and drop any video, PDF, or notes. We support all major formats.

2
Minimal workspace

AI generates problems

Our AI analyzes your content and creates relevant practice questions instantly.

3
Computer monitor on desk

Practice with feedback

Solve problems and get detailed AI feedback on your reasoning and mistakes.

Problem Types

From math derivations to conceptual questions—practice every type of problem you'll face.

f(x)

Open Answer

Write detailed explanations. AI evaluates your reasoning, not just keywords.

"Explain how supply and demand determine market prices..."
∑

Math & Derivations

Step-by-step solutions with feedback on each line of your work.

"Find the derivative of f(x) = x³ + 2x² - 5x + 3"
?

Conceptual Questions

Test your understanding of key concepts and theories.

"Why does DNA replication occur in the 5' to 3' direction?"
A B C

Multiple Choice

Quick knowledge checks with detailed explanations for each option.

"Which force causes objects to fall toward Earth?"
Student solving problems Math student writing University professor teaching

AI that checks your reasoning

Get detailed feedback on your thought process, not just right or wrong answers.

Step-by-step evaluation
AI analyzes each step of your solution method.
Identifies missing concepts
Finds gaps in your understanding and suggests what to review.
Explains mistakes clearly
Tells you exactly where your reasoning went wrong and why.
Your Answer
"The market reaches equilibrium when supply equals demand, so prices stay the same."
AI Feedback
Good start! You're right that equilibrium occurs when supply equals demand. However, you missed explaining how the price mechanism works to reach this equilibrium. Consider: what happens when there's excess supply or demand?
No keyword matching. No generic responses.
Just real feedback on your actual reasoning.
Student taking notes Desk with study materials Female student working

Simple Student Pricing

No hidden fees. Cancel anytime. Start free, upgrade when you're ready.

Free

$0
7 days trial
  • 5 lectures per month
  • Basic problem types
  • AI feedback
Most Popular

Student

$9/month
Billed monthly
  • Unlimited lectures
  • All problem types
  • Priority AI feedback
  • Export practice sets

Annual

$90/year
Save 17%
  • Everything in Student
  • 2 months free
  • Priority support
  • Advanced analytics

All plans include 7-day free trial. No credit card required.

Minimal desk setup MacBook workspace New desk setup

cta

This section is ready for your content. You can customize it to match your needs.

Key Feature

Highlight your main benefits and what makes you special.

Another Feature

Showcase additional value you provide to customers.