Flex AI Workout Trainer & Log vs Gym Tracker
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.
Gym Tracker
Log workouts, track progress, and achieve fitness goals with this comprehensive gym companion. Features include customizable plans, an extensive exercise library with demos, body metric tracking, and personalized meal plans. Stay motivated with community features and offline accessibility.
- Effortless workout logging
- Customizable workout plans
- 1300+ animated exercise demos
- Body metrics tracking
- Progress stats and analytics
- Personalized meal plans
- Offline accessibility
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GymTracker is the ultimate gym tracker that helps you log workouts, track progress, and reach your fitness goals faster. Whether you’re building muscle, losing weight, or improving strength, GymTracker has all the tools you need to stay on track. For beginners and advanced athletes alike, this app adapts to your needs and keeps you motivated. With GymTracker, you can effortlessly log workouts and monitor your performance. Record lifts, sets, and reps with ease, then visualize your gains with charts and stats. GymTracker offers a complete solution to optimize your training and achieve your goals. Key Features Effortless Workout Logging: GymTracker’s intuitive interface lets you log workouts in seconds. Record exercises, sets, and reps effortlessly — the easiest way to track your gym sessions and see results. Customizable Workout Plans: Design your own routines or choose from expert-built programs. GymTracker makes it easy to create personalized workouts that evolve with your progress. 1300+ Animated Exercises: Explore a huge exercise library with 1300+ animated demos. Filter by muscle or equipment to find new moves and avoid plateaus. Body Metrics Tracking: Monitor key metrics like weight, body fat, and waist size. Track custom measurements to get deeper insights into your progress as your body changes. Progress Stats & Analytics: Visualize your progress with detailed stats and graphs. GymTracker’s journal shows your workout history and personal records so you can celebrate gains and stay motivated. Community Connection: Stay motivated by connecting with others. See who’s working out at your gym, share achievements, and cheer each other on with the GymTracker community. Personalized Meal Plans: Fuel your goals with customized nutrition. GymTracker provides meal plans and healthy eating tips tailored to your objectives. Instant Food Scanner: Logging meals is easy. Scan any food barcode and GymTracker instantly adds calories and nutrients to your log — perfect for tracking on the go. Workout Planner & Scheduler: Plan and schedule workouts in advance so you never miss a training day. The built-in planner keeps your fitness routine organized with reminders for upcoming workouts. Advanced Fitness Calculators: Calculate your one-rep max, BMI, body fat, and ideal heart-rate zones. Use these tools to optimize your training and set realistic goals. Exercise Technique Guides: Learn proper form with step-by-step instructions and tips for each exercise. Reduce the risk of injury and make every rep count with GymTracker’s detailed tutorials. Daily Inspiration & Tips: Stay motivated with daily fitness quotes and tips. GymTracker isn’t just a tracker — it’s like a personal coach to keep you pushing forward. Offline Accessibility: No internet? No problem. GymTracker works fully offline so you can log workouts anytime. Ensuring you never lose progress. Perfect for Every Fitness Level Whether you're a beginner starting your fitness journey or an advanced athlete pushing performance limits, GymTracker adapts to your needs. Personal trainers rely on this gym tracker to manage client progress, while fitness enthusiasts use it to break through plateaus and achieve new personal records. SUBSCRIPTION GymTracker is completely free, with optional premium features available through a subscription. The subscription period is 1 month or 1 year, and you can access additional features by subscribing via your Apple ID. The subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Manage and cancel subscriptions in your account settings on the App Store. Privacy policy: https://kreatordev.com/gymtracker/privacy Terms of use: https://kreatordev.com/gymtracker/terms We’d love your feedback! If you have any questions or suggestions, don’t hesitate to reach out at nowkreator@gmail.com.
Screenshots
Verdict
The clearest difference is ads: Flex AI Workout Trainer & Log at none against Gym Tracker's shown. Flex AI Workout Trainer & Log also leads on update cadence (every 9 days vs every 3 months) and ratings volume (2.4K vs 6). Gym Tracker's advantage is rating (4.8 vs 4.6) and iOS requirement (13.0 vs 18.0). On price, in-app purchases, monetization model and device support 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 8 in-app purchases, starting at $12.99 per month and Gym Tracker sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Gym Tracker holds the better App Store score, 4.8 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 6, so its average is the more settled of the two.
Flex AI Workout Trainer & Log ships an update every 9 days, Gym Tracker every 3 months. The most recent releases landed on October 22, 2026 and October 13, 2026 respectively.
| Parameter | Flex AI Workout Trainer & Log | Gym Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) | 4.8 (6 ratings) — better |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 2.4K — better | 6 |
| Update frequency | Every 9 days — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 574 MB | 51 MB |
| Age rating | 17+ | 4+ |
| Developer | Flex Artificial Intelligence Inc. | KREATORDEV LLC |
Customer experience
Flex AI Workout Trainer & Log
Gym Tracker
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
Gym Tracker
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
- 1 Month Free PremiumFree
- Lifetime Free PremiumFree
Gym Tracker
- Unlock Pro Features$1.991 Month
- Unlock Pro Features$17.991 Year
Questions
Is Flex AI Workout Trainer & Log free?
Is Gym Tracker free?
Which has better reviews, Flex AI Workout Trainer & Log or Gym Tracker?
Do Flex AI Workout Trainer & Log or Gym Tracker have ads?
Which is updated more often, Flex AI Workout Trainer & Log or Gym Tracker?
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