Body Log: Core Circuit

Core Circuit is a logbook for your core. Pick a plan or build your own circuit from 47 moves, run it once a day, and watch the year fill in. Everything is free and works offline. Your sessions stay on your phone, and there's no account to make. A circuit a day • Five ready-made plans, from Foundation to Advanced • 47 core moves: planks, hollow holds, dead bugs, crunches, leg raises and more • Create your own move when the library doesn't have it • A how-to guide for every move, with the one cue that fixes your form • Set a target for every move: seconds for holds, reps for the rest • Today's dial fills one segment per move Run it hands-free • A get-ready countdown starts the clock once you're in position • Spoken cues for go, halfway, target reached and what's next • Haptics on every cue, with timed rest between moves • Each hold moves on by itself when you reach its target • A Live Activity on the Lock Screen and Dynamic Island while you train See the work • A day streak with a grace day, so tonight still counts • A year heatmap of every day you trained • Yesterday's best hold or rep set on the home screen • A Home Screen widget and a daily reminder Made by Spruzzo Labs. Questions or ideas? hello@spruzzolabs.com