Everything here — 98 interactive explainers, the quizzes, the 3-D scenes — is free, ad-free and
tracker-free, built nights-and-weekends. Donations pay the domain and buy the coffee.
Donate (UPI · cards · netbanking)
Other ways GitHub Sponsors —
monthly or one-time, pays out via GitHub ·
star the repo —
free and genuinely helps people find it.