
ChronoMuscle - Fitness
Workouts, from the Lock Screen
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Free
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About
ChronoMuscle is a workout tracker built around one idea: once you've started a session,
you shouldn't need to unlock your phone or dig through an app to log a set.
WIDGET-FIRST TRAINING
Add the ChronoMuscle widget to your Home Screen and start a workout with one tap — no app
launch required. See your active session, current exercise, and remaining sets
right there between sets.
LIVE ACTIVITY ON YOUR LOCK SCREEN
Once you're training, ChronoMuscle puts your session on your Lock Screen and in the
Dynamic Island. Mark a set done, jump to the next exercise, or start your rest
timer without leaving what you're doing.
REST TIMER THAT RUNS ITSELF
Start a rest timer from any surface — app, widget, or Lock Screen — and it counts
down live everywhere at once. Pause, resume, or stop it from wherever you happen
to be looking.
BUILD YOUR OWN SPLIT
Create workout plans (séances) with your own exercises, set counts, rep targets,
and rest durations. Reorder exercises, edit anytime, and jump to any unfinished
exercise out of order when your gym's machines don't cooperate with your plan.
ONE SESSION, THREE SURFACES, ALWAYS IN SYNC
Tap "done" on a set from the widget, and your phone's Lock Screen and the app both
update instantly. Everything reads from the same session — there's no separate
"sync" to wait on.
Your workout data stays on your device — ChronoMuscle has no account, no ads, and no
analytics tracking you between sessions.
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What's New in ChronoMuscle
1.0
August 27, 2026







