Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

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Harmonic Conjugates & Analytic Continuation Mastery

Construct a harmonic conjugate's leading coefficient by hand, or track a branch point's monodromy around a multi-loop path -- four clean answers in a row, no clock.

🎯 4 in a row 🚫 no clock

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