Simple, transparent pricing
Start free. Upgrade when you need more.
Free
$0
For trying out the platform
- 3 successful generations per day
- LeetCode and custom problems
- Interactive lesson sessions
- Variable trace and DP visualization
Premium
$21
per month
- Unlimited generations
- Everything in Free
- Roadmap features (see below)
- Priority support
Coming soon (Premium)
- Graph visualizations (React Flow BFS/DFS, Dijkstra, topo sort)
- Union-find visualizer
- Segment tree / Fenwick tree
- Trie visualizer
- Monotonic stack / queue
- Saved notes and highlights per lesson step
- Practice mode with guided checkpoints and answer reveal
- Spaced repetition scheduling for past lessons
- Shareable lesson links and PDF export
- Custom input playground to regenerate scripts for different examples
- Interview tracks (Meta, Google, Systems) with curated problem sets
- Priority generation queue for premium
- Premium support channel (email + in-app)