Flex vs Flex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Flex
Effortlessly track your strength training progress, build personalized workout routines, and visualize your lifts with an intelligent plate calculator. Syncs data across devices using iCloud for seamless access and prioritizes privacy with Sign in with Apple.
- Effortless workout tracking
- Personalized workout templates
- Customizable workout folders
- Smart Plate Calculator
- Cross-device iCloud sync
- Privacy-focused with Sign in with Apple
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Flex is the ultimate companion for your strength training journey. Whether you're a powerlifter, bodybuilder, or just getting started in the gym, Flex helps you track your progress, build strength, and achieve your fitness goals with simplicity and precision. Experience effortless workout tracking designed to keep you focused on your lift, not your phone. You can build personalized workout templates for any routine and organize them into custom folders to keep your training schedule clean and accessible. With the built-in Smart Plate Calculator, you never have to do gym math again.... Flex automatically visualizes how to load the bar for your specific lifts. Your workouts go where you go. Flex seamlessly syncs your data across all your devices using iCloud, so your history is always up to date. Designed with privacy in mind, Flex uses Sign in with Apple and iCloud to ensure your health data remains secure without third-party accounts. Build consistency and see results. Download Flex today and make every rep count. Flex is designed and built by two fitness freaks, Ashton Krstolic and Kevin Brown. Every feature exists because we needed it at the rack. Questions or ideas? Visit our support page — we read every message.
Screenshots
Verdict
The clearest difference is in-app purchases: Flex at none against Flex's 3. Flex also leads on ads (none vs shown). Flex's advantage is update cadence (every 10 days vs every 6 months) and iOS requirement (15.5 vs 18.0). On price, rating, review sentiment and ratings volume 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
Both are free to download. Flex sells 3 in-app purchases, starting at $4.99 per month. Flex asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Flex against 5.0 for Flex. Both are backed by a comparable volume of ratings — 6 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Flex ships an update every 10 days, Flex every 6 months. The most recent releases landed on September 30, 2026 and September 23, 2026 respectively.
| Parameter | Flex | Flex |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (7 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 | 7 — better |
| Update frequency | Every 10 days — better | Every 6 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 107 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | CHRISTOPHER LAWRENCE BAGNELL | KEVIN BROWN |
Customer experience
Flex
Flex
In-app purchases
Flex
- Flex Pro Monthly7 Days trial$4.991 Month
- Flex Pro Annual$29.991 Year
- Flex Pro Lifetime$149.99
Flex
No in-app purchases









