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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Gym Tracker is a simple workout tracker and log for weight lifting and strength training. Log sets, reps and weight in seconds, follow a proven program, and watch your strength grow. No clutter and no account needed. Open the app, pick your exercises, and train. WHY LIFTERS USE GYM TRACKER • Fast workout log: add sets, reps, weight (kg or lb), time or distance with a tap. Mark warm-up, easy, hard and drop sets, and pair exercises into supersets. • Rest timer that follows you: starts after each set, adjusts by 15 seconds, and stays on your Lock Screen and Dynamic Island with a Live Activity. • Guided workouts: follow today's session one exercise at a time. Tap "Done & Log Set", rest, repeat until the workout is complete. • 9 ready-made programs: Full Body, Half Body, Push Pull Legs and 4- and 5-day splits for beginner, intermediate and advanced lifters. Or build your own routine. • 1,300+ exercises with animated demos and step-by-step instructions. Filter by 19 target muscles and 14 equipment types, or add your own exercises. TRACK YOUR PROGRESS • Strength charts for every exercise: estimated one-rep max (1RM), volume, max weight and max reps. • Workout history in a calendar, with daily totals for weight lifted, sets and reps. • Body measurements: weight, body fat %, waist, arms and more, with charts and optional photos. • Home Screen and Lock Screen widgets for today's workout, your streak and your weekly volume. GYM TOOLS • 1RM calculator, plate calculator, BMI, daily calories and heart rate zones. • Barcode food scanner and ready-made meal plans. • Workout reminders on your training days. • A notebook for training notes, and separate diaries for different goals. YOUR DATA STAYS YOURS • Automatic daily iCloud backup with easy restore. • Export your workouts to CSV or JSON anytime. • Log workouts offline. Your training data is stored on your device. TRAIN WITH OTHERS After 3 workout days, sign in to unlock the community: find gyms near you and see who is training there right now. Available in English, French and Arabic, in light and dark mode. GYM TRACKER PRO Gym Tracker is free to use. Pro removes ads, unlocks HD exercise animations, and adds the Streak and Progress widgets. Pro is offered as a monthly or yearly auto-renewing subscription. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://kreatordev.com/gymtracker/privacy Terms of Use: https://kreatordev.com/gymtracker/terms Questions or ideas? Email us at mobile@kreatordev.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 4 months) and ratings volume (2.4K vs 5). Gym Tracker's advantage is iOS requirement (15.0 vs 18.0). On price, rating, in-app purchases and monetization model 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 5, so its average is the more settled of the two.
Flex AI Workout Trainer & Log ships an update every 9 days, Gym Tracker every 4 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Flex AI Workout Trainer & Log | Gym Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) | 4.8 (5 ratings) — better |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 2.4K — better | 5 |
| Update frequency | Every 9 days — better | Every 4 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 | 15.0 — better |
| Further details — not scored | ||
| Size | 574 MB | 66 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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