Flux: Workout Tracker

Get to your workout faster, see what's working and make every set your own. Personalized plans and a fresh choice of System, Light or Dark.

Walk into the gym with a plan. Leave knowing what to aim for next.

Flux creates personalized gym routines around your goals, experience, schedule, session length and available equipment. Know what to lift, track each set and see whether your training is making a difference. Your next session starts with more direction.

TRY EVERY FEATURE FREE

Download Flux free and use every feature for 14 days. No payment is required, the trial does not start a subscription and there is no automatic charge.

UNLOCK FOREVER

When the trial ends, all training features remain locked until you purchase Lifetime Unlock once. There is no free training tier after the trial and no recurring charge. Apple shows the exact price for your storefront before you confirm. Eligible existing paid owners retain permanent Full Access.

PLAN AROUND YOUR LIFE

• Generate routines for Push/Pull/Legs, Upper/Lower, Full Body and more • Match training to your gym equipment, schedule and available weight increments • Build your own routines and custom exercises • Explore Routine Library programs with authored phases and progression

CHOOSE YOUR STRENGTH PERIODIZATION

• Adaptive Block: follow goal-appropriate phases with completion and recovery checks • Daily Undulating (DUP): vary strength-day emphasis across your routine • Linear: follow a six-week progression of training emphasis • Weekly Undulating (WUP): vary the routine-wide strength emphasis by model week • Manual: choose an eligible phase and hold it until you change it, with safety recovery when needed

Select a model when generating a strength routine. To choose a different model, generate a new routine. Routine Library programs keep their authored progression, and HIIT keeps its timed prescription. Adaptive Mode is a separate control for eligible session adjustments; personalized features need calibration and sufficient training history.

KEEP YOUR ROUTINE CLEAR

• Browse saved workouts and progress in Overview • Find existing routine controls in Settings • Read saved program instructions and equipment guidance in Guide • Follow clearer phase, cycle and paused-position displays

LOG EVERY SET

• Make every set your own: individual set targets in generated strength workouts • Follow warm-up, top-set and back-off guidance with built-in rest timers • Use supersets, drop sets, myo-reps and giant sets • See how each exercise compared with last time and what to aim for next time

UNDERSTAND YOUR TRAINING

• Review workout history and page through exercise progress • See what is working with Strength, Health, Consistency and Velocity findings • Choose dates for Performance and Health; review recorded history linked to your current routine in Routine • Revisit Strength and Health findings saved locally with your Check-in reports • Check how the current routine is landing, plus Training Phase & Status • Use optional Apple Health sleep, HRV and heart-rate context, with permission controlled by you • Export your training data and use optional signed-in cloud backup

MAKE FLUX YOURS

Make Flux feel like yours. Choose System, Light or Dark in Profile > Theme. Signed-in choices sync with your Flux account; System follows each device. Supported home widgets and Live Activities follow where iOS permits.

Spend less time waiting and more time training. Faster startup and more responsive Dashboard, Insights and history views keep your session moving. A brief letter wave welcomes you during onboarding; normal launches have no added animation delay.

Log workouts offline; cloud backup syncs separately when you are online. Apple Health is optional; you can use Flux without granting Health access.

Download Flux and make every session move your training forward.

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