Flux: Workout Tracker
Personalised Gym Routines
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Your training should progress when you do. Flux builds personalised gym routines, tracks every set and adapts progression, volume and recovery over time.
Train smarter with workouts tailored to your goals, available equipment, and time. This isn't AI, this is a smarter App which uniquely adapts to you over time, keeping all your data on your device without sharing with other AI apps or websites.
No more generalised, AI driven cookie-cutter routines which remain static. Try Flux today and see real-time adaptive changes happening the more you use the App.
WHAT YOU CAN DO WITH FLUX
• Generate unlimited instant workouts for Push/Pull/Legs, Upper/Lower, Full Body, and more
• Create unlimited routines and custom exercises
• Customise each workout down to sets, reps, RIR, and rest times
• Track every set, rep, and weight with minimal taps
• Use warm-up set guidance, rest timers, supersets, drop-sets, myo-reps and giant sets
• Adapt sessions on the fly by adding, removing, or swapping exercises
PROGRESSION WITHOUT GUESSWORK
• Built-in progressive overload and periodisation (Balanced, Intensity Focus, Volume Accumulation and Deload)
• Automatic adjustments based on your performance and recovery with Flux Pro
• Plateau support with smart techniques like exercise swaps and intensity changes
SMARTER EXERCISE SELECTION
• Recommendations based on your goals, history, and preferences
• Equipment-aware planning with Gym Profiles.
• Prescriptions matched to your gym’s available weight increments
RECOVERY & INSIGHTS
• Fatigue-aware training support
• Apple Health integration for sleep, HRV, and heart rate context
• Detailed history, exercise progress, and data export
• Seamless sync across your devices
Download Flux Workouts and make every session count.
Free features include workout generation, routine types (PPL, Upper/Lower, Full Body), workout tracking, automatic progression, and workout customization.
Flux Adaptive Coach subscription unlocks advanced adaptive features. Full comparison: fluxworkouts.com
Support: https://fluxworkouts.com/support.html
EULA Terms: https://fluxworkouts.com/terms.html
Privacy Policy: https://fluxworkouts.com/privacy.html
more Love this app to create workouts based on parameters, such as gym, muscle group, type of workout and duration. Then easily swap the exercises on the routine or individually on the day of. Really great UI to see, manage and track each exercise. Love the dashboard feature and muscle set frequency and volume graphs. Built in a way that naturally flows with the way I like to use a workout app and track progress. Highly recommend it! And I've tried Hevy, Alpha Progression, Gymverse and even made my own web based app. Flux takes the best of each workout app and improves on it.
Love this app to create workouts based on parameters, such as gym, muscle group, type of workout and duration. Then easily swap the exercises on the routine or individually on the day of. Really great UI to see, manage and track each exercise. Love the dashboard feature and muscle set frequency and volume graphs. Built in a way that naturally flows with the way I like to use a workout app and track progress. Highly recommend it! And I've tried Hevy, Alpha Progression, Gymverse and even made my own web based app. Flux takes the best of each workout app and improves on it.
What's new in v8.2.9
ENHANCED
Routines are now more structured and adapt fully to your progress, adjusting weights and progression fully.
NEW
Muscle set split graph widget for the homepage
BUGS
A single, sole, cheeky bug sneaked in. No longer!
8.2.9 Jul 24
What's new in v8.2.8
Nothing massive in this one, we've added a new widget to compliment the new pre-programmed routines and squashed a few cheeky bugs.
NEW
We've added a new Routine Dashboard widget which shows what phase of the workout you're on, the week and how long until the next phase.
FIXES
Some bugs made their way into the app in the last release - all sorted now!
8.2.8 Jul 21
What's new in v8.2.7.
It's a biggie! We've added the ROUTINE LIBRARY
Choose a structured programme for strength, size, powerbuilding, or high-intensity training, with schedule and session-length options to fit your week. Programmes advance workout by workout, so missing a day never skips the plan.
Flux now checks your gym equipment and exercise preferences before setup, offers compatible alternatives where needed, and shows clearer set targets and more accurate workout time estimates. Pro users can also use Adaptive Mode to automatically refine weight, reps, RIR, and rest while keeping the programme's exercises, phases, sequence, and advanced methods intact.
We'll be adding new routines in future updates, let us know at support@fluxworkouts.com if there's any in particular you want us to focus on!
Personalised Flux-generated routines remain available from the new Add Routine screen.
ENHANCEMENTS
- To support the new Routine Library, we've enhanced the Edit Exercise screen and gives you more control over individual sets.
- The Insights Screen has had a slight upgrade which also brings additional speed to the data shown.
- The UI has had a polish to align styles across screens.
BUG FIXES
- Couple of sneaky bugs made their way in affecting performance and slowing the app down.
8.2.7 Jul 15
New in Flux Workouts 8.2.6
IMPROVED SUPERSET AND GIANT SETS.
We've tweaked the logic when the App generates a workout and applies a superset or giant set to save time or increase intensity. It's less likely now to pair deadlifts and squats!
INSIGHTS IMPROVEMENTS
We've moved a few things around on the Insights screen ready for a future update coming soon!
BUGS SQUASHED:
- App crashes when trying to view exercise list
- Superset Unilateral Exercises skipping the second set
- Updated weight choice on workout completion screen had strange rounding values
- Other enhancements under the hood.
8.2.6 Jul 2
New in Flux Workouts 8.2.4
Bug Fixes only, nothing special for this one - sorry folks!
8.2.4 Jun 14
Flux Workouts 8.2.3 — Holiday Mode + Smarter Check-Ins
HOLIDAY MODE
Going away? Turn on Holiday Mode in Profile → App Settings to freeze your streak. It won't reset while you're gone, and Flux won't treat the break as an unplanned layoff or recalibrate your plan. Switch it off when you're back and your streak continues right where it left off with a fresh 7 days to log your next workout.
SMARTER CHECK-INS
Your scheduled check-in is now a focused, data-driven coaching report instead of a generic summary:
• One insight per screen — what we saw, what it means, what to do
• Charts appear only where they help (volume, strength, consistency, sleep vs. sets)
• New long-term health trends: resting heart rate, HRV, VO₂ max, lean body mass (needs HealthKit sync)
• Accept, decline, or apply routine suggestions right inside the report
All generated on your device from your own training and health data, no external AI agents making stuff up.
SMARTER ADAPTIVE TRAINING
More accurate per-muscle fatigue and recovery, plus a new sliding-scale response: a tired muscle gets a light intensity ease first, then more rest, then a trimmed set, and only a movement swap when fatigue is severe. Your big lifts are eased rather than ignored, and sessions are never over-trimmed.
FIXES & POLISH
• HIIT circuit exercises now reorder and swap correctly across active, preview, and routine-edit screens
• More relevant, equipment-aware check-in suggestions
Thanks for training with Flux. We're a small, part-time team — tell us what you think at support@fluxworkouts.com
8.2.3 Jun 8
New in v8.2.2.
NEW: Plate Calculator! Flux now will tell you what plates you need on a barbell based exercise based on the plates you have available. When you update, Flux will add a selection of plates for you. You can change this by visiting the Locations pages and updating your plates there. On active Exercise screens you'll now find a handy little note which breaks down plates available to use.
NEW: Goal Setter Widget on the dashboard. Have a goal to aim for? Need motivation? Set a simple countdown in days on a widget so it's always there on your dashboard.
NEW: Custom KPI Dashboard widget. Create your own widget to monitor the KPI of choice! Whether volume lifted, lean body mass or sleep hours - it's up to you!
ENHANCED: We've overhauled the Insight screens, bringing in new charts and a more integrated and expanded timeframe selector.
ENHANCED: Redesigned the Location page to add the new Weight Plates selections.
Bug Fixes:
- Rest timer was stopped when you changed the weight on the next exercise, now it continues until you cancel it or it runs out, or complete the next working set.
- A bug crept in when switching out exercises, no more!
- Fatigue charts are now ordered correctly (most fatigued to least fatigued) and are consistent across dashboard widget and insights.
- HIIT Exercise reordering bug has been obliterated.
8.2.2 Jun 4
New in v8.2.1.
ENHANCED: Workout generation just got smarter - workouts with limited equipment now return more applicable exercises
ENHANCED: HIIT Workout generation now selects more applicable exercises.
FIXED: A bug was causing barbell exercises requiring a squat rack to appear when one was not available.
FIXED: A bug which caused excessive reps in adaptive mode
Other small UI tweaks here and there.
Feedback or support - reach out to us at support@fluxworkouts.com, thanks for being part of the Flux Workouts journey!
8.2.1 May 18
New in v8.2.0.
It's a big one folks, a new and exciting feature has been in the works for a while, and it's here!
NEW: Hybrid Workouts for Pro Users! Ever fancied a routine of weight training mixed in with a cheeky HIIT circuit? Well now you can. We already supported mixing weight training and time-based exercises like treadmill sprints or heavy bag rounds, but we've now gone one step further:
- Mix HIIT Workouts and Weight Training workouts in the same routine.
- Edit a Routine and add extra workouts up to a maximum of 5 per routine.
- Mix different goals in a single Routine, for example if you want to do a Hypertrophy day on day 1 but Strength focused session on day 3, now you can!
- Edit Routines on the Routine Details page to set the deload thresholds, type of progression and more.
NEW: Do you have mixed equipment and need to set KG for one and LBs for the other? Now you can, just head to the Location settings, under the equipment you can now set the weight measure to use per equipment. You can still set a default in your profile.
NEW: Swapped out an exercise? You can now select for it not to appear in future workouts.
ENHANCED: If you update a weight mid workout, now it updates only future sets for that exercise.
ENHANCED: Lots of User Experience tweaks and improvements.
Plus lots of styling updates to bring a bit of consistency to the Flux experience, we clearly went off on a tangent on some of those screens, and a bit of a polish under the hood to make things faster and smoother.
Thanks for being part of the Flux Journey, feedback, feature requests and bug reports to support@fluxworkouts.com
8.2.0 May 10
New in v8.1.7
NEW: You know those rest timer beeps? You can now switch them off or make them louder by changing the setting on your Profile screen.
NEW: Edit exercises mid-workout, change the weight, sets, reps and join to make supersets or giant sets with adjacent exercises.
NEW: Lots of new Exercises added to the library, including landmine based push and pull, more variations of compounds and more core, carry and conditioning work.
NEW: Accessory Exercise Rotation now allows you select how often you want them to rotate, choose between no rotation, rotate every workout and so on. Want a fresh workout every time? Now you can!
new: You can now define the number of exercises for HIIT Ad-hoc Workouts, and it will estimate the total time needed too.
FIXED: Duplicated exercises or movement patterns shouldn't appear anymore in the same workout.
As always, thanks for being part of the Flux Journey, feature requests or bug reports to support@fluxworkouts.com
8.1.7 Apr 13
New in v8.1.6
FIXES : Some Users still reporting crashes on the dashboard screen. Really sorry folks - this one had us flummoxed, hopefully this beats that one into submission. Reach out to us at support@fluxworkouts.com if it's still happening for you!
8.1.6 Apr 5
New in v8.1.5
FIXED : Just a few random bug fixes that pop up now and then.
Bugs or feature requests - support@fluxworkouts.com
8.1.5 Apr 5
New in v8.1.4
FIXED : Crashing on opening the App in certain scenarios.
Support or feature request? Find us at support@fluxworkouts.com
8.1.4 Apr 4
New in v8.1.3:
ENHANCED : We've optimised Routine Generation even further, it now follows science-backed NSCA guidelines for sets, reps, RIR and rest periods depending on your goal. This includes Ad-hoc workouts too, not just Routine based!
Thanks for being part of the Flux Journey, bugs and feature requests - support@fluxworkouts.com
8.1.3 Apr 2
New in V8.1.2
New : Muscle Set Coverage per Workout is now visible on the Workout Details Page, the Active Workout Screen and the Workout Completed Screen to give you a clearer view of the muscles worked in that session.
Thanks for being part of the Flux Workouts Journey, any bugs or feature requests - support@fluxworkouts.com
8.1.2 Mar 26
New in v8.1.1:
ENHANCED: Routine generation is now more balanced, and will give more isolation exercises more often instead of compounds later in the workout.
NEW: More bodyweight exercises have been added
FIX : Check In feature had a few bugs on the insights displayed which are now fixed.
Bugs or Feature Requests: support@fluxworkouts.com
8.1.1 Mar 24
New in v8.1.0:
ENHANCED : Pro mode - Check In has improved! Now you can set a day of the week and cadence (fortnightly or monthly) for deep-dive coaching analysis. Flux reviews your past performance, analysis and makes recommendations to improve your training. Why fortnightly or monthly? Data - a week might be a bad week, or a really good week. This aims to reduce noise and make your training insights more accurate.
ENHANCED : We've made fatigue modelling and application much more accurate, so you may see Flux recommending some changes which you were not expecting. You can always override them if you do not agree!
Stay tuned for more updates. As always we're on support@fluxworkouts.com if any bugs arise or you want to request a new feature.
8.1.0 Mar 22
Now in Version 8.0.9:
- NEW : Give Routines a Custom Name or add them to your favourites
- NEW : Two new Dashboard widgets; Favourite Routines and Favourite Workouts.
- ENHANCEMENT : Routine Generation is now more accurate to the criteria you set
- ENHANCEMENT : Ad-hoc workouts now take into account fatigue and readiness states
- ENHANCEMENT : Muscle Set Volume now incorporates Frequency
Thanks for being part of the Flux Journey! Bugs, Features and all else - support@fluxworkouts.com
8.0.9 Mar 20
New in v8.0.8.
- Optimised Routine and Workout Generation
- Order sets by muscle group charts by direct sets, indirect sets and total sets.
- Choose Coach Check In cadence from fortnightly and monthly. (Pro only)
Thanks for being a part of the Flux Workouts Journey, bugs, feedback and feature requests to support@fluxworkouts.com!
8.0.8 Mar 17
New in v8.0.7
- Flux Labs, setting the foundations for cutting edge features you can opt-into in the future.
- Calibration Phase fix, seems the last update reset calibration phases for some, this restores the previous state and continues where you left off.
- Other minor UX improvements
Thanks for downloading Flux Workouts. We're always happy to hear feedback or feature suggestions at support@fluxworkouts.com
8.0.7 Mar 13
New in v8.0.5.
- HIIT Circuits mode now integrated
- Live lock screen widgets and Dynamic Island support for in-progress workouts.
- New homepage widgets to show readiness and your next workout.
- Some enhancements under the hood to speed up workout generation.
- Timed Exercises like Plank
As always, we'd love to hear feedback or feature requests - reach out to us at support@fluxworkouts.com
8.0.6 Mar 11
What's new in v8.0.1
Bug Fix for existing Users - if you're updating from an older version you may have to complete the onboarding flow again due to a substantial change in the App code. If you've created an account, your Data is all backed up and will be restored.
Main changes carried forward from v8.0.0
NEW - Workout Generator. Now you can build a whole Routine ahead of the workout week!
- Create Unlimited Routines.
- Supports all the main split types like Push, Pull, Legs and Upper, Lower, with more planned.
- You choose the number of days, the time you can commit per workout and preferred split and Flux will do the rest.
- You can edit all aspects of your Routine, right down to the rest-time per exercise. It’s fully customisable.
- Activate Adaptive Coaching on your Routine (Pro only) and Flux will analyse your performance against the routine over time, intervening gently where it sees a plateau forming or backing you off if a deload is needed.
- Select to Rotate Accessories in your routine and Flux will rotate in new variations of an accessory or lower tier exercise to keep things fresh.
- Working through a Routine and cant workout at your usual place? No worries, just create a new Gym Profile with what equipment is available and Flux will regenerate your workout, swapping like-for-like exercises where possible and recalculating weight too.
- Time saving and intensity busting Super Sets, Giant Sets and Top Set + Back Off Sets. Again, fully configurable by you.
- Prefer Double Progression? Flux has you covered, or switch to Linear Progression if that’s your bag.
And much, much, more.
NEW - Enhanced Insights. Get deeper workout analytics to measure your performance and track progress.
- Detailed split per muscle group performance and fatigue tracking over the course of your routine helps you spot an imbalance and rectify.
- Measure your training performance and consistency over time, are you sticking to your plan and hitting your targets?
NEW - Add Custom Exercises directly from the Add Exercise page within the workout. So if you’re mid-workout and want to add a new Custom exercise, no need to break from your flow to do so.
Always happy to hear suggestions, feature requests and feedback! support@fluxworkouts.com
8.0.1 Mar 2
In version 8.0.0:
NEW - Workout Generator. Now you can build a whole Routine ahead of the workout week!
- Create Unlimited Routines.
- Supports all the main split types like Push, Pull, Legs and Upper - Lower, with more planned.
- You choose the number of days, the time you can commit per workout and preferred split and Flux will do the rest.
- You can edit all aspects of your Routine, right down to the rest-time per exercise. It’s fully customisable.
- Activate Adaptive Coaching on your Routine (Pro only) and Flux will analyse your performance against the routine over time, intervening gently where it sees a plateau forming or backing you off if a deload is needed.
- Select to Rotate Accessories in your routine and Flux will rotate in new variations of an accessory or lower tier exercise to keep things fresh.
- Working through a Routine and cant workout at your usual place? No worries, just create a new Gym Profile with what equipment is available and Flux will regenerate your workout, swapping like-for-like exercises where possible and recalculating weight too.
- Time saving and intensity busting Super Sets, Giant Sets and Top Set + Back Off Sets. Again, fully configurable by you.
- Prefer Double Progression? Flux has you covered, or switch to Linear Progression if that’s your bag.
And much, much, more.
You can still create Ad-hoc workouts as and when from the dashboard, which wont interrupt your routine planing and progress, but will inherit and apply progression when completed. So even though you don't use your routine for that workout, Flux will still apply your latest weights and apply progression next time if you hit your targets.
NEW - Enhanced Insights. Get deeper workout analytics to measure your performance and track progress.
- Detailed split per muscle group performance and fatigue tracking over the course of your routine helps you spot an imbalance and rectify.
- Measure your training performance and consistency over time, are you sticking to your plan and hitting your targets?
NEW - Add Custom Exercises directly from the Add Exercise page within the workout. So if you’re mid-workout and want to add a new Custom exercise, no need to break from your flow to do so.
Plus the obligatory bug fixes.
Full release notes and detailed breakdown of the new Workout Generator at fluxworkouts.com/blog
Note - if you haven’t upgraded since the earlier versions, remember, you can now sign in with your Apple ID or Google Account if you want to save and backup your data.
Thanks for being part of the Flux Workouts Journey. We’re just indie part-time developers just trying to build something really cool and useful. We’re always happy to hear feedback or suggestions at support@fluxworkouts.com.
8.0.0 Mar 1
Whats new in version 7.5.9:
Bug fix in this one folks (snuck in the last update): Issue with Gym Profiles / Locations and inability to edit or create. We've added logic to prevent it but if it occurs, try just restarting the app a couple of times as a one off to clear the cache.
Thanks for using Flux Workouts, any feedback always welcome to support@fluxworkouts.com
7.5.9 Feb 19
Whats new in version 7.5.8
OH MY! Have we got an update for you, they're coming thick and fast!
- Now you can add Drop-sets, Myo-Sets and Rest-Pause sets during a workout - just tap on that "+ Add Set" button during a workout and off you go.
- Exercise notes, not just general notes per exercise (add on the exercise details via the exercise library page in your profile) but in-workout notes too!
- See your exercise history on the Exercise screen in the Exercise Library
- More intelligent Warm-up set addition
Plus your usual bug squashing.
Feedback always welcome! We'd love to hear from you at support@fluxworkouts.com
7.5.8 Feb 18
What's new in v8.2.9
ENHANCED
Routines are now more structured and adapt fully to your progress, adjusting weights and progression fully.
NEW
Muscle set split graph widget for the homepage
BUGS
A single, sole, cheeky bug sneaked in. No longer!
more Version 8.2.9 Jul 24
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