Simple, transparent pricing
Start free. Upgrade when you need more — or just buy the interview season and be done.
Free
$0
For trying out the platform
- 3 lesson generations per day
- LeetCode and custom problems
- Every interactive visualizer — arrays, graphs, trees, DP, heaps, union-find, tries, segment trees, and more
- Practice mode with guided checkpoints
Premium
$6.99/mo
or $4.08/mo billed annually
- Unlimited generations*
- Saved notes & highlights on any lesson
- Shareable public lesson links
- Interview tracks with progress tracking
- Priority support
- Everything in Free
*Fair use: up to 100 generations per month. Enough for daily practice; get in touch if you need more.
3-month pass
One-time
$19 once
For one interview season. No subscription.
- 90 days of Premium
- Everything in Premium — notes, sharing, tracks, practice
- Up to 120 generations per month
- Nothing to cancel. It ends on its own.
Pay once, study, walk into the interview. Buying again while yours is still active adds 90 days on top.
On the roadmap
What we're building next. Premium members get it first.
- Spaced-repetition review of your past lessons
- Streaks and a daily practice goal
- PDF export of any lesson
- Custom input playground — regenerate a lesson for your own example
- Priority generation queue for Premium