Pricing
All 347 concept notes are free. The hands-on interactive lessons where you write the code yourself — plus an unlimited AI coach — are Pro.
Free
₩0Free forever
Just sign up and start right away
- 347 concept notes — all free to read
- Start right away, no login
- AI 1:1 coach — 5 turns/day trial
- Save progress & bookmarks
- No ads
Recommended
Pro
₩9,900/ month
Unlimited AI 1:1 tutoring · cancel anytime
- Unlimited interactive lessons — learn by writing code yourself
- Full interactive "Try it yourself" in concept notes
- Unlimited AI 1:1 coach — Free is 5 turns/day
- Top-tier Claude model — deeper, more accurate 1:1 coaching
- 40-day tutoring track · tracks weak points & reviews
- Everything in Free included
Payments are securely processed through Paddle · Refund policy
Prices and benefits may change at launch. Contact: [email protected]