XP Leveling Curve Designer

Points, badges and levels are the load-bearing mechanics of mobile-app gamification, and the one number that quietly decides whether they feel rewarding or grindy is the XP curve: how much experience each level demands. This simulator runs a real leveling engine — linear, power or exponential req(n) formulas, randomized session XP, and a level-up loop identical to a game backend's — while a player token climbs a spiral tower of platforms spaced by how much XP each level actually costs. Tune the curve, watch the gaps between platforms stretch into a grind wall or flatten into an trivial climb, and read live pacing stats that flag exactly when a curve crosses from "healthy" into "churn risk".