Comparison

Flux vs onlygains ai

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Flux

This app helps you train smarter by generating personalized workouts based on your goals, available equipment, and time. It uniquely adapts to your progress over time, keeping all your data on your device for privacy. Track every set, rep, and weight with ease, and benefit from advanced features like progressive overload and fatigue-aware training.

Highlights
  • Personalized workout generation
  • Customizable routines and exercises
  • Real-time adaptive changes
  • Progressive overload and periodisation
  • Fatigue-aware training support
  • Apple Health integration
  • Data export
Features
Read full description

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. 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 programs with Overview, Guide and Settings before choosing - Follow Flux Hybrid for strength and timed cardio - Swap exercises for a workout or across the remaining program where supported CHOOSE YOUR STRENGTH PERIODIZATION - 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 programs keep their authored progression; HIIT keeps its timed prescription. Personalized 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

About

onlygains ai

Features
Read full description

OnlyGains is the everything app for hybrid athletes: your training, nutrition and recovery plans adapted to your lifestyle, track meals and activities, sync your wearables, monitor your performance. Want more? Get an accredited human coach to review your progress Most apps make you pick: a running app that ignores your lifting, or a gym app that treats running as an afterthought. OnlyGains programs both in the same week, so your intervals don't wreck your squats and your leg day doesn't wreck your long run. BUILT FOR HYBRID TRAINING • Tell Coach OG your goal — HYROX, a marathon PB, CrossFit, triathlon, or just being strong AND fit — plus your schedule, equipment, and injury history • Get a fully personalised training plan that balances lifting, running, and recovery across the week • Your plan adapts every day based on what you actually did, not what the spreadsheet hoped NUTRITION WITHOUT SPREADSHEETS • Snap a photo of your food — get calories, macros, and micronutrients in seconds • Daily targets that match your training load, whether it's a heavy block or a taper week • Log meals by photo, voice, or chat RECOVERY-AWARE COACHING • Connects to Apple Health, Apple Watch, and Strava • A daily Form Score built from your HRV, resting heart rate, and sleep tells you when to push and when to back off • Workouts sync automatically — no double logging A COACH IN YOUR POCKET, 24/7 • Chat with Coach OG anytime: swap a session, fix your pacing, ask why your plan changed • It remembers your history, your niggles, and your preferences — like a real coach does Whether you're chasing your first HYROX, balancing marathon prep with muscle, or just want one app instead of four, OnlyGains is the only training partner you need. ONLYGAINS PRO (AUTO-RENEWABLE SUBSCRIPTION) Pro unlocks 24/7 coach chat, photo food logging with full macros, food and exercise search, daily-adaptive plans, and wearable-driven training. $9.99 per month or $79.99 per year after a 30-day free trial (prices may vary by region and are shown at checkout). Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple ID > Subscriptions. Any unused portion of the free trial is forfeited when you purchase a subscription. Terms of Use: https://onlygains.ai/terms-of-use Privacy Policy: https://onlygains.ai/privacy-policy Support: https://onlygains.ai/support

Screenshots

Flux4 screens
onlygains ai4 screens

Verdict

The call

The clearest difference is update cadence: Flux at weekly against onlygains ai's every 2 weeks. onlygains ai's advantage is iOS requirement (15.1 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flux sells 4 in-app purchases, starting at $2.99 per month and onlygains ai sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Flux ships an update weekly, onlygains ai every 2 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Flux versus onlygains ai: the parameters behind the verdict, then further details
ParameterFluxonlygains ai
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPod — better
Requires iOS26.215.1 — better
Further details — not scored
Size47 MB58 MB
Age rating4+4+
DeveloperDigital Flux LtdChaitanya Giri Goswami

In-app purchases

4 purchases

Flux

Subscriptions2
  • Flux Pro : 1 Month$2.991 Month
  • Flux Pro : 12 Month$19.991 Year
One-time2
  • Flux Pro : Lifetime Pass - Founder$49.99
  • Flux Pro : Lifetime Pass$59.99
2 purchases

onlygains ai

Subscriptions2
  • Onlygains PRO7 Days trial$12.991 Month
  • OnlyGains PRO1 Month trial$99.991 Year

Questions

Is Flux free?
Flux is free to download, with in-app purchases available.
Is onlygains ai free?
onlygains ai is free to download, with in-app purchases available.
Do Flux or onlygains ai have ads?
Neither Flux nor onlygains ai shows ads.
Which is updated more often, Flux or onlygains ai?
Flux ships an update weekly, and onlygains ai every 2 weeks. Most recently, Flux was updated on October 21, 2026 and onlygains ai on October 25, 2026.

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