MuscleBoss

MuscleBoss is completely free — every feature, every AI coaching session, every workout plan. No subscription required.

Your personal AI training coach — in your pocket.

MuscleBoss combines smart workout planning, real-time session tracking, and an AI coach that understands your body, your goals, and how you feel today. Whether you're chasing PRs, building a new routine, or just trying to stay consistent — MuscleBoss keeps you on track.

SMART WORKOUT TRACKING Log sets, reps, and weight as you train. MuscleBoss automatically detects personal records, tracks your rest periods, and keeps your session running smoothly — even when your phone is in your pocket.

AI COACH THAT KNOWS YOU Tell the AI coach your goal, how much time you have, and how you're feeling. It generates a structured, personalised coaching session with targeted cues, recovery guidance, and action items — built around your workout history and health data.

BUILD PLANS & ROUTINES Design custom workout plans from a library of 400+ exercises. Organise them into weekly routines, assign them to specific days and times, and let MuscleBoss automatically surface the right workout when it's time to train.

400+ EXERCISES WITH SMART FILTERING Search by muscle group, equipment, movement pattern, or difficulty. Use AI-assisted filtering to find exactly the right exercise for your session. View detailed instructions, tips, PR history, and related exercises for every movement.

APPLE HEALTH INTEGRATION MuscleBoss connects with Apple Health to read your steps, weight, heart rate, and sleep — giving the AI coach the full picture of your recovery and readiness. Completed workouts are written back to Health automatically.

TRACK EVERY PR Every set you log is tracked. MuscleBoss automatically surfaces new personal records and keeps a complete PR history for every exercise — so you can see exactly how far you've come.

BUILT FOR YOUR GOALS Set your training goals, equipment access, and preferred training location during onboarding. MuscleBoss uses this to personalise every recommendation, from daily workout suggestions to AI coaching sessions.

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AI recommendations are for fitness guidance only and are not a substitute for medical advice.