Bell Curve takes the headache out of assigning bells to ringers. Instead of redrawing charts on paper or wrestling with spreadsheets every time the key changes or a ringer is out, you set the piece's key and range, add your roster, and drag each ringer onto the bells they'll cover on a clean chromatic ladder. The moment something doesn't add up, Bell Curve tells you. It flags uncovered bells, double-booked notes, and four-in-hand conflicts before your first rehearsal, not after. Change the key or swap in a substitute and the chart updates instantly, with no manual re-charting. When you're ready, generate clear per-ringer assignment cards and export a polished PDF chart for each song. Hand them out, set them on the table, or email them to your choir. Everything runs entirely on your device. No accounts, no sign-ups, no data collection. Your roster and repertoire stay with you. Built for handbell choir directors and church music ministers who would rather spend their time making music than redrawing seating charts.