Flux: Workout Tracker

Adaptive Gym Routine Planner

Only for iPhone

Free · In-App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Straightforward gym routines, logging, progression and periodisation. Personalise your plan. On-device logging, optional cloud backup. No ads. No subscription. Walk into the gym with a plan. Leave knowing what to aim for next. Flux creates personalised gym routines around your goals, experience, schedule, session length and available equipment. See your whole workout in one scrolling view, log sets with less screen switching and keep past performance close when choosing your next targets. 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 After the trial, training features require a one-time Lifetime Unlock. There is no free training tier after the trial and no recurring charge. Apple shows the price for your storefront before you confirm. Eligible existing paid owners keep permanent Full Access. PLAN AROUND YOUR LIFE - Generate Push/Pull/Legs, Upper/Lower, Full Body and other routines - Match training to your equipment, schedule and available weight increments - Choose a session length from 30 to 90 minutes when generating a routine - Build your own routines and custom exercises - Browse prebuilt programmes with Overview, Guide and Settings before choosing - Follow Flux Hybrid for strength and timed cardio - Swap exercises for a workout or across the remaining programme where supported CHOOSE YOUR STRENGTH PERIODISATION - Adaptive Block: goal-appropriate phases with completion and recovery checks - Daily Undulating: different strength-day emphases across your routine - Linear: a six-week progression of training emphasis - Weekly Undulating: routine-wide emphasis that changes by model week - Manual: choose an eligible phase, with safety recovery when needed Choose a model when generating a strength routine. To change models, generate a new routine. Prebuilt programmes keep their authored progression; HIIT keeps its timed prescription. Personalised features need calibration and sufficient training history. FOLLOW YOUR WORKOUT IN ONE PLACE - Log sets with less screen switching and see what is done and what comes next - Keep warm-ups and working sets together, with rest timers and set targets - Move on easily: the next unfinished exercise comes into view automatically - Use individual set targets, supersets, drop sets, myo-reps and giant sets - Add sets and notes, or open Edit, Swap and Remove from your workout - Review achieved sets, missed targets, next-session guidance and trained muscles in Workout Complete EDIT SETS AND CHECK PROGRESS IN ONE PLACE Choose your next targets with past performance close by. Edit sets in Settings, then switch to Stats in the same exercise details screen for performance charts, volume trends and previous workouts. Pick a date range to see recent sessions or the longer trend. Available from your workout, Next Up or saved routine, with history across routines. Future prebuilt target restrictions still apply. UNDERSTAND YOUR TRAINING - Review Strength, Health, Consistency and Targets hit in Insights - Follow your current routine from the day you started it - Revisit findings saved with your Check-in reports - See your training phase and position in Routine Overview - Use optional Apple Health sleep, HRV and heart-rate context - Export training data and use optional signed-in cloud backup MAKE FLUX YOURS Choose System, Light or Dark in Profile > Theme. Signed-in choices sync; System follows each device. Home widgets and Live Activities follow where iOS permits. Log offline with valid access. An already-open workout can be finished after trial expiry; returning after expiry shows the paywall. Restore Purchases and Account & Data remain available. Cloud backup syncs separately when online. Apple Health is optional. Learn more: https://fluxworkouts.com Support: https://fluxworkouts.com/support Terms: https://fluxworkouts.com/terms Privacy: https://fluxworkouts.com/privacy

  • 5.0
    out of 5
    3 Ratings

YOUR WORKOUT, ONE SCREEN We've redesigned the Active Workout screen - see every exercise in one easy-to-follow view. Log sets with less screen switching, keep track of what you have completed and see what comes next. Finish an exercise and Flux brings the next unfinished exercise into view, including its warm-ups. ADJUST YOUR SESSION AS YOU TRAIN Add warm-ups, working sets and notes directly in your workout. Need a change? Open Edit, Swap or Remove from each exercise's menu, without going back to the workout overview. EDIT SETS AND CHECK PROGRESS IN ONE PLACE Use Settings and Stats in the same exercise details screen to adjust your targets and review what you lifted before. See performance, training-volume trends and previous workouts to help choose your next targets. Your history follows the exercise across routines, whether you open it from your workout, Next Up or a saved routine. Existing editing rules still apply. CHECK-INS THAT STAY CLEARED Fixes a stuck check-in banner and repeated reports for the same period. Deleting a report no longer makes that period immediately due again on the same device. Existing duplicate reports are not removed automatically.

The developer, Digital Flux Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Purchases
    • Location
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics
    • Other Data

Privacy practices may vary based, for example, on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Provider
  • Digital Flux Ltd
Size
  • 49.3 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 26.2 or later.
  • iPhone
    Requires iOS 26.2 or later.
  • Mac
    Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
Languages
  • English
Age Rating
9+
In-App Purchases
Yes
Copyright
  • © 2026 Digital Flux Ltd