Comparison

Flex AI Workout Trainer & Log vs Easy Muscle

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

Head to head
About

Flex AI Workout Trainer & Log

This app uses AI to provide personalized workout plans and real-time form feedback for weightlifters. It tracks progress, offers adaptive progression, and includes motivational features like leaderboards and streaks. It's designed for all experience levels, from beginners to pros.

Highlights
  • AI personal trainer
  • Real-time form feedback
  • Personalized workout plans
  • Adaptive progression
  • Strength tracking
  • Community leaderboards
  • Apple Watch integration
Features
Read full description

Flex AI is the world’s first true AI personal trainer — built for lifters who want to train smarter, progress faster, and perfect their form. Whether you’re chasing size, strength, or consistency, Flex uses real-time AI to guide every rep, adjust your program, and keep you motivated through challenges, leaderboards, and streaks. - Your AI Coach, Every Rep Personalized workouts built automatically by AI personas that learn your goals, history, and preferences. Real-time form feedback powered by patented computer-vision AI — get instant corrections on squats, bench, deadlift, rows, and more. Adaptive progression and deloading backed by sports-science principles — no spreadsheets, no guesswork. - Train Smarter — See Results AI tracks your strength curve and increases weight when you’re ready. Visual progress graphs show PRs, volume, and recovery trends. Track sets, reps, and tempo with a tap — or automatically with Apple Watch. - Stay Motivated & Connected Join a global community of lifters. Compete on leaderboards, build streaks, and earn badges. Post progress photos, celebrate milestones, and share results. - Accessible to Everyone Free to start with all core features included. Upgrade anytime for advanced AI coaching and premium analytics. Designed for all experience levels — from beginners to pros. - Why Flex AI Real-time AI form feedback (patented) Adaptive, science-based programming Progress tracking & recovery insights Gamified streaks + leaderboards Apple Watch integration Built for hypertrophy & strength goals Start Training Smarter — Today Download Flex AI and experience personal training powered by real AI. Perfect your form. Unlock your best lift. Train smarter — free on iPhone + Apple Watch.

About

Easy Muscle

This AI-powered fitness coach offers personalized workout plans for beginners, requiring no special equipment. Achieve weight loss and muscle gain goals with short, effective routines tailored to your needs and schedule.

Highlights
  • AI-powered personalized workout plans
  • Beginner-friendly exercises
  • No special equipment needed
  • Workouts anytime, anywhere
  • 28-Day Workout Challenge
  • 15-minute daily routines
Features
Read full description

Follow the Easy Muscle Workout Plan to lose weight, build muscle, and become better, stronger, and healthier! Unlock your potential and sculpt the physique of your dreams. Easy Muscle is an AI-powered, beginner-friendly coach with hundreds of easy-to-learn exercises tailored for fitness beginners, helping you work out anytime, anywhere. No special equipment is needed—just a chair at home will do! No equipment? No problem. Our app supports exercises anytime, anywhere. With workouts like wall exercises, chair workouts, and sofa workouts, you can start your day with a routine tailored to your needs. 28-Day Workout Challenge: Say goodbye to generic workout routines. Trained with cutting-edge knowledge and technology, Easy Muscle AI creates a personalized workout plan based on your specific goals, whether that’s weight loss, muscle gain, or both. Each plan considers your age, height, weight, experience, and posture, ensuring each exercise is perfectly suited to you. Effortless Training: Just 15 minutes a day—no need to break a sweat or tackle difficult moves. Simply choose your preferred workout time, click 'Start,' and dive into an effective, enjoyable workout routine that helps you build muscle, lose weight, or stay in shape. Easy Muscle delivers quick, sustainable results, seamlessly fitting into your lifestyle. Ready to become your best self? Start training with Easy Muscle today! Easy Muscle Membership Auto-Renewal Service Description 「Subscription Periods」 Monthly Subscription: Automatically renews monthly, with one charge per month. Semi-Annual Subscription: Automatically renews every 6 months, with one charge every 6 months. Annual Subscription: Automatically renews yearly, with one charge per year. 「Subscription Prices」 Prices are based on the information submitted in the iAP application. For example, the monthly subscription is $19.99 per month, and the annual subscription is $49.99 per year. 「Payment」 After the user confirms the purchase and makes the payment, the amount will be charged to the iTunes account. 「Auto-Renewal」 The "Monthly/Annual Subscription" products are auto-renewable. Once the purchase is confirmed, your iTunes account will be charged. Subscriptions will automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current subscription period. Within 24 hours prior to the expiration of your subscription period, Apple will automatically charge your iTunes account, and the membership validity will be extended for another subscription cycle upon successful payment. 「Canceling Auto-Renewal」 To cancel auto-renewal, go to "Settings" on your iPhone > tap "Apple ID" > select "Subscriptions" > choose "Easy Muscle" to cancel the subscription. Privacy Policy: https://api-international.onespax.com/ys/privacy Terms of Service: https://api-international.onespax.com/ys/terms User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ If you have any questions or suggestions, please email us at: easymuscle001@gmail.com

Screenshots

Flex AI Workout Trainer & Log4 screens
Easy Muscle4 screens

Verdict

The call

The clearest difference is rating: Flex AI Workout Trainer & Log at 4.6 against Easy Muscle's 1.8. Flex AI Workout Trainer & Log also leads on monetization model (freemium vs subscription) and ratings volume (2.4K vs 17). Easy Muscle's advantage is device support (4 vs 2) and iOS requirement (12.0 vs 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. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $12.99 per month and Easy Muscle sells 20 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Flex AI Workout Trainer & Log holds the better App Store score, 4.6 against 1.8. That said, the two scores are not equally well evidenced: Flex AI Workout Trainer & Log has 2.4K ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 47% of Easy Muscle's.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, Easy Muscle fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Flex AI Workout Trainer & Log versus Easy Muscle: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogEasy Muscle
PriceFreeFree
Rating4.6 (2.4K ratings) — better1.8 (17 ratings)
Positive reviews69.0% of reviews — better47.4% of reviews
Number of ratings2.4K — better17
Update frequencyEvery 9 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium — betterSubscription
DevicesiPhone, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.012.0 — better
Further details — not scored
Size574 MB408 MB
Age rating17+4+
DeveloperFlex Artificial Intelligence Inc.Rhythm wave Technology Limited

Customer experience

Flex AI Workout Trainer & Log

All ratings2,412 ratings
Positive92.0%
Neutral2.6%
Negative5.4%
Written reviews310 reviews
Positive69.0%
Neutral6.5%
Negative24.5%

Easy Muscle

All ratings17 ratings
Positive17.6%
Neutral0.0%
Negative82.4%
Written reviews19 reviews
Positive47.4%
Neutral0.0%
Negative52.6%

Bugs and requests

Flex AI Workout Trainer & Log

Reported bugs

3 issues
  • App crashes on iOS 16 update
  • Inability to log workouts on previous days
  • Inconsistent syncing between app and Apple Watch

Requested features

4 requests
  • Offline workout mode
  • Ability to save and reuse custom workout plans
  • Muscle group targeting and analytics
  • Social features and community integration

Easy Muscle

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Flex AI Workout Trainer & Log

Subscriptions6
  • Premium Subscription Monthly$12.991 Month
  • Premium Plus Monthly$29.991 Month
  • Premium Plus Family Monthly$69.991 Month
Show 3 more
  • Premium Yearly Subscription$79.991 Year
  • Premium Plus Yearly7 Days trial$191.991 Year
  • Premium Plus Family Yearly7 Days trial$499.991 Year
One-time2
  • 1 Month Free PremiumFree
  • Lifetime Free PremiumFree
20 purchases

Easy Muscle

Subscriptions16
  • Easy Muscle Monthly Membership$9.991 Month
  • Easy Muscle Monthly7 Days trial$9.991 Month
  • 1 month vip$19.991 Month
Show 13 more
  • Easy Muscle Membership$29.991 Month
  • Easy Muscle vip 12 Month 29.99$29.991 Year
  • 12 Month VIP$29.991 Year
  • Easy Muscle Yearly Membership7 Days trial$29.991 Year
  • EM VIP 12 Monthly 35.99$35.991 Year
  • Easy Muscle Membership$39.991 Year
  • EasyMuscle Halfyear Membership$39.996 Months
  • Monthly Membership (6 Month)7 Days trial$39.996 Months
  • Easy Muscle Membership$49.996 Months
  • EM Membership(Free Trial)$49.991 Year
  • Easy Muscle Yearly Membership$49.991 Year
  • Easy Muscle Membership 12Month7 Days trial$49.991 Year
  • 12 month vip$59.991 Year
One-time4
  • Easy Muscle Membership$39.99
  • Member Yearly Cashback 49.99$49.99
  • Easy Muscle Membership2 variants$59.99
Show 1 more
  • Easy Muscle Membership$79.99

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is Easy Muscle free?
Easy Muscle is free to download, with in-app purchases available.
Which has better reviews, Flex AI Workout Trainer & Log or Easy Muscle?
Flex AI Workout Trainer & Log is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Easy Muscle averages 1.8 from 17 ratings.
Do Flex AI Workout Trainer & Log or Easy Muscle have ads?
Neither Flex AI Workout Trainer & Log nor Easy Muscle shows ads.
Which is updated more often, Flex AI Workout Trainer & Log or Easy Muscle?
Flex AI Workout Trainer & Log ships an update every 9 days, and Easy Muscle fortnightly. Most recently, Flex AI Workout Trainer & Log was updated on October 29, 2026 and Easy Muscle on October 24, 2026.

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