Buck the Beaver

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Daily Scaffold

Learn system design daily.

Free to start. Pro unlocks everything.

Free

$0

Always free

4 foundation skills — a free taste
Daily challenge question
Mistakes practice queue
XP, streaks & daily goal

Pro

Everything in Free
All 40 skills across 6 tiers
12 famous design drills
Interview mode
Leaderboard ranking
Crown leveling & spaced review

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