Folicle is an AI hair tracker for people on real treatment protocols. Five gyroscope-aligned scalp photos a week, registered to your first session so week 12 is comparable to week 1. One honest weekly Hair Score with breakdown for photo trend, routine consistency, and recovery factors. Treatment log for minoxidil, finasteride, microneedling, tretinoin, dutasteride. Built solo by someone 18 months into the protocol because mirror-checking isn't a measurement.