Comparison

Workout Tracker vs Flex

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

Head to head
About

Workout Tracker

Features
Read full description

Turn every session into visible progress – strength & running, fully offline. FitData is the privacy-first, all-in-one fitness app designed to bridge the gap between structured strength workout and elite run tracking for athletes who demand total customization without any catches. How We Support Your Fitness Journey: We empower you to train with precision and own your data, so you can move confidently toward your performance goals by: • Unifying your workout world. Eliminate the need for multiple apps by tracking your deadlifts and your marathon training in one place, with an all-in-one platform that automatically syncs with Apple Health to close your rings effortlessly. • Empowering your independence. Build fully customizable plans and log weights, reps, or rest times with a tracking system that is 100% offline-capable - ensuring your workout never stops, even without a connection. • Personalizing your coaching. Engage in over 80 monthly AI conversations where your coach uses your actual workout and run history to create personalized routines and offer advice - never generic tips. • Prioritizing your focus. Stay in the zone with Live Activities on your lock screen and Dynamic Island, or leave your phone behind entirely with standalone Apple Watch support for both lifting and running. • Analyzing your progress. Deeply understand your body by tracking long-term trends for strength, volume, and running performance while using on-device Apple Intelligence to spot plateaus. • Adapting to your privacy. Your workout keeps going even offline thanks to on-device storage, and you stay in control of your data at all times. ► Download now and start your first workout in seconds. ► Try FitData Pro free for 7 days – cancel anytime. Privacy Policy: https://fitdata.app/privacy-en.html Support: https://fitdata.app/support-en.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Flex

This app logs every workout set, tracks personal records, and generates personalized fitness plans. It also offers nutrition tracking, progress insights, and an AI coach for guidance. Stay motivated with streaks and badges, and share your progress with others.

Highlights
  • AI-generated workout plans
  • Set-by-set tracking with rest timer
  • Superset support
  • GPS cardio tracking
  • Nutrition logging with macro breakdowns
  • Personal record tracking
  • AI coach for fitness advice
Features
Read full description

The training app built for people who lift, run, and want everything in one place. Flex logs every set, tracks your PRs, builds personalized workout and race plans, and keeps your training, cardio, nutrition, recovery, and Apple Health data connected — so every session has a purpose and nothing gets forgotten. --- GET YOUR PLAN - AI-generated plans for Strength, Hypertrophy, Fat Loss, Athletic, Mobility, and General Fitness - Race goals for 5K, 10K, half marathon, full marathon, or custom distances - Auto-generated running plans with weekly pacing, distance targets, and effort guidance - Classic lifting splits: Push/Pull/Legs, Bro Split, and more - Autopilot progression — weights update automatically as you get stronger - Swap any exercise with one tap - Import workouts from a photo or screenshot LOG EVERY SESSION - Set-by-set lifting tracker with rest timer and duration timer - Superset support — group exercises and flow between them - GPS cardio tracking with pace, distance, route, heart rate, and calories - Start scheduled runs directly from your training calendar - Live Activity on your lock screen and Dynamic Island during workouts and runs - 500+ exercises with instructions and visuals - Custom exercises — add anything that’s missing - Notes on any set or session - Workout calendar to schedule and review lift days, run days, or both TRACK YOUR NUTRITION - Log meals and snacks with macro and calorie breakdowns - Barcode scanner for instant food lookup - TDEE-based calorie and macro goals tailored to your body and goal - Track water intake alongside your nutrition - Recipes and saved foods for meals you repeat - Nutrition quality scores and ingredient flags to help you understand what you’re eating TRACK REAL PROGRESS - Personal records, lift goals, and race goals tracked in one place - Muscle balance radar chart — see which groups you’re neglecting - Strength, volume, cardio, and activity trends over time - Heart rate zones with zone-colored cardio graphs - Cardio Load, Cardio Focus, and Activity Strain scores - Bodyweight tracking and health metrics dashboard - Apple Health imports with Health badges and duplicate prevention TRAIN FROM YOUR WATCH - Start lifts, runs, walks, rides, hikes, and rows from Apple Watch - Log sets from your wrist and sync them back to the iPhone app - Watch settings for units, auto-pause, splits, and audio cues - Swipeable in-workout controls for Finish, Pause, Settings, Lock, and Splits - Heart rate, GPS distance, calories, and HealthKit syncing STAY CONSISTENT - Morning sleep summary notification with sleep duration and score - Workout logged confirmation notifications - Workout streaks and badges to keep you motivated - Milestones that reward consistency - Shareable workout summaries and export graphics TRAIN WITH OTHERS - Share workouts with friends or the community - Discover what others are doing for inspiration --- PLUS: AI COACH Ask anything — form tips, recovery advice, workout swaps, running guidance, or what to do when a movement hurts. Real guidance, right when you need it. Try free for 7 days. --- Privacy Policy: https://tryflexapp.com/privacy Terms of Use: https://tryflexapp.com/terms

Screenshots

Workout Tracker4 screens
Flex4 screens

Verdict

The call

The clearest difference is iOS requirement: Flex at 15.5 against Workout Tracker's 18.0. On price, update cadence, ads and in-app purchases 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. Workout Tracker sells 2 in-app purchases, starting at $6.99 per month and Flex sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Workout Tracker ships an update every 11 days, Flex every 10 days. The most recent releases landed on September 25, 2026 and September 30, 2026 respectively.

Scorecard1 real difference · 9 level
Workout Tracker versus Flex: the parameters behind the verdict, then further details
ParameterWorkout TrackerFlex
PriceFreeFree
Rating—5.0 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 11 daysEvery 10 days — better
AdsYesYes
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, Apple WatchiPhone, iPod, Apple Watch — better
Requires iOS18.015.5 — better
Further details — not scored
Size79 MB107 MB
Age rating12+4+
DeveloperCan AtaCHRISTOPHER LAWRENCE BAGNELL

In-app purchases

2 purchases

Workout Tracker

Subscriptions2
  • FitData Pro (Monthly)7 Days trial$6.991 Month
  • FitData Pro (Annual)7 Days trial$69.991 Year
3 purchases

Flex

Subscriptions2
  • Flex Pro Monthly7 Days trial$4.991 Month
  • Flex Pro Annual$29.991 Year
One-time1
  • Flex Pro Lifetime$149.99

Questions

Is Workout Tracker free?
Workout Tracker is free to download, with in-app purchases available.
Is Flex free?
Flex is free to download, with in-app purchases available.
Do Workout Tracker or Flex have ads?
Both Workout Tracker and Flex show ads.
Which is updated more often, Workout Tracker or Flex?
Workout Tracker ships an update every 11 days, and Flex every 10 days. Most recently, Workout Tracker was updated on September 25, 2026 and Flex on September 30, 2026.

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