Comparison

Flex AI Workout Trainer & Log vs LVLUPBODY

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

LVLUPBODY

This app provides personalized workout and nutrition programs to help you achieve your health and fitness goals. Track your progress, meals, habits, and measurements with guidance from your coach and connect with supportive communities.

Highlights
  • Personalized workout programs
  • Track workouts and nutrition
  • Monitor lifestyle habits and measurements
  • Real-time coach messaging
  • Digital community support
  • Milestone badges and progress tracking
  • Wearable device integration
Features
Read full description

With the Level Up Body App, you will have access to workout programs designed specifically to help you reach your fitness and health goals. You can follow & track your workouts, your nutrition, your lifestyle habits, measurements and results–all with the help of your coach. FEATURES: - Access training plans and track workouts - Follow along to exercise and workout videos - Track your meals and make better food choices - Stay on top of your daily habits - Set health and fitness goals and track progress towards your goals - Gain milestone badges for achieving new personal bests and maintaining habit streaks - Message your coach in real-time - Be part of digital communities to meet people with similar health goals and stay motivated - Track body measurements and take progress photos - Get push notification reminders for scheduled workouts and activities - Connect your Apple Watch to track workouts, steps, habits, and more right from your wrist - Connect to other wearable devices and apps like the Apple Health App, Garmin, Fitbit, MyFitnessPal, and Withings devices to track workouts, sleep, nutrition, and body stats and composition

Screenshots

Flex AI Workout Trainer & Log4 screens
LVLUPBODY4 screens

Verdict

The call

The clearest difference is in-app purchases: LVLUPBODY at none against Flex AI Workout Trainer & Log's 6. LVLUPBODY also leads on rating (4.9 vs 4.6) and device support (4 vs 2). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 16) and update cadence (every 9 days vs every 6 weeks). On price and ads 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 6 in-app purchases, starting at $12.99 per month. LVLUPBODY asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LVLUPBODY holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Flex AI Workout Trainer & Log has 2.4K ratings behind it against 16, so its average is the more settled of the two.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, LVLUPBODY every 6 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
Flex AI Workout Trainer & Log versus LVLUPBODY: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogLVLUPBODY
PriceFreeFree
Rating4.6 (2.4K ratings)4.9 (16 ratings) — better
Positive reviews69.0% of reviews—
Number of ratings2.4K — better16
Update frequencyEvery 9 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.015.5 — better
Further details — not scored
Size574 MB176 MB
Age rating17+4+
DeveloperFlex Artificial Intelligence Inc.LVLUPBODY Fitness Inc.

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%

LVLUPBODY

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

LVLUPBODY

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 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
None

LVLUPBODY

No in-app purchases

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is LVLUPBODY free?
LVLUPBODY is free to download, with no in-app purchases.
Which has better reviews, Flex AI Workout Trainer & Log or LVLUPBODY?
LVLUPBODY is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while LVLUPBODY averages 4.9 from 16 ratings.
Do Flex AI Workout Trainer & Log or LVLUPBODY have ads?
Neither Flex AI Workout Trainer & Log nor LVLUPBODY shows ads.
Which is updated more often, Flex AI Workout Trainer & Log or LVLUPBODY?
Flex AI Workout Trainer & Log ships an update every 9 days, and LVLUPBODY every 6 weeks. Most recently, Flex AI Workout Trainer & Log was updated on November 11, 2026 and LVLUPBODY on November 3, 2026.

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