Pi Day Memory Games by Pimon

New visualization: Cantor's Diagonal — tap through an animated proof that some infinities are bigger than others. Plus 2 new quiz questions (30 total), a new "Cantor, Pi, and the Bigger Infinity" section in About Pi, and a fix for sharing and copying content. Pi Day is March 14 — how many digits will you know by then? If you're new since 2.1: here's what you've got. Memory Insights Dashboard Your play sessions become accuracy heatmaps, weak-spot analysis, and a memorized frontier tracker. See exactly where you're strong and where to focus next. Pro unlocks transition analysis, chunking detection, trend graphs, and the full interactive heatmap. Pi Reader Coaching Have a friend, teacher, or family member read digits aloud while you type them back. Earn 6 dedicated badges from your first 5 digits all the way to Pi Reader Expert. 11 Interactive Visualizations From a rolling circle that reveals pi to Monte Carlo estimation, Buffon's Needle, Fourier Waves, Euler's Identity, Quantum Interference, and now Cantor's Diagonal — every visualization is hands-on and shareable. 5 Game Modes, 57 Badges, 30 Quiz Questions Pimon, Speed Pi, Pure Pi, Pi Recall, and the Quiz. Race on 8 Game Center leaderboards. Collect badges across 9 categories. Chase the Completionist.