Pricing
Three a day free.
Unlimited when you're serious.
Pattern recognition is a volume game. The free tier keeps the habit alive, Pro removes the ceiling.
Free
$0forever
- 3 problems a day
- Unlimited retries on started problems
- AI grading with reasoned feedback
- XP, streaks, and daily goals
- Full explanations after every problem
Pro
unlimited$9/ month, cancel anytime
- Unlimited problems, scroll as far as you want
- Everything in Free
- No ceiling on streaks and daily goals
- Cancel anytime, keep your progress
- Support a one-person product
Stripe checkout · cancel in one click from your profile
A problem costs us a fraction of a cent to grade. Pro exists so the catalog keeps growing.