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.
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.
- AI personal trainer
- Real-time form feedback
- Personalized workout plans
- Adaptive progression
- Strength tracking
- Community leaderboards
- Apple Watch integration
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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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Flex AI Workout Trainer & Log | LVLUPBODY |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) | 4.9 (16 ratings) — better |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 2.4K — better | 16 |
| Update frequency | Every 9 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 18.0 | 15.5 — better |
| Further details — not scored | ||
| Size | 574 MB | 176 MB |
| Age rating | 17+ | 4+ |
| Developer | Flex Artificial Intelligence Inc. | LVLUPBODY Fitness Inc. |
Customer experience
Flex AI Workout Trainer & Log
LVLUPBODY
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
Flex AI Workout Trainer & Log
- Premium Subscription Monthly$12.991 Month
- Premium Plus Monthly$29.991 Month
- Premium Plus Family Monthly$69.991 Month
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- Premium Yearly Subscription$79.991 Year
- Premium Plus Yearly7 Days trial$191.991 Year
- Premium Plus Family Yearly7 Days trial$499.991 Year
LVLUPBODY
No in-app purchases
Questions
Is Flex AI Workout Trainer & Log free?
Is LVLUPBODY free?
Which has better reviews, Flex AI Workout Trainer & Log or LVLUPBODY?
Do Flex AI Workout Trainer & Log or LVLUPBODY have ads?
Which is updated more often, Flex AI Workout Trainer & Log or LVLUPBODY?
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