Flex AI Workout Trainer & Log vs FitYogurt
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.
FitYogurt
Easily log and track your strength training sessions. This app helps you record sets, weights, and reps, analyze your progress, and estimate your one-rep max. Share your workouts and discover over 200 exercise videos to enhance your training.
- Log unlimited workouts
- Create custom exercises
- View daily workout logs
- Get 1 Rep max estimates
- 200+ built-in exercise videos
- Share workouts
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Want to stay in shape? Many people like to use the gym while they're at it. However, they often have trouble keeping track of their workouts. And as you know, not tracking workouts can slow down strength gains. That's why we created RepItDown. It is a smart tracker that will help you keep track & share your workouts. RepItDown is a quick and simple workout tracker for strength training. It will help you log your workouts, lift heavier weights and analyse the results. You can track unlimited workouts, add as many custom exercises as you like, free without ads. Inspire others by sharing your workouts. Features: - View and navigate daily workout logs quickly by swiping between dates. - Move to a specific day using the inbuilt calendar. - Add an exercise to the workout log and record sets of weight, reps, distance, calories or time. - Create custom exercises to suit your training needs. - Get 15+ days workout history, performance, within the exercise. - Get 1 Rep max estimates for your next workout. - 200+ built-in exercises videos against categories such as Chest, Back, Legs, Shoulders etc. - Clone exercise from past workouts. - Share workouts. So, what are you waiting for ? Improve with each set. Don’t just workout, write it down or as we say, RepItDown.
Screenshots
Verdict
The clearest difference is in-app purchases: FitYogurt at none against Flex AI Workout Trainer & Log's 8. FitYogurt also leads on rating (5.0 vs 4.6) and iOS requirement (12.0 vs 18.0). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 1). On price, update cadence, ads 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. FitYogurt asks for nothing beyond the download.
FitYogurt holds the better App Store score, 5.0 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 1, so its average is the more settled of the two.
Flex AI Workout Trainer & Log ships an update every 9 days, FitYogurt weekly. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Flex AI Workout Trainer & Log | FitYogurt |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 2.4K — better | 1 |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 574 MB | 58 MB |
| Age rating | 17+ | 4+ |
| Developer | Flex Artificial Intelligence Inc. | Dinu Devarajan |
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
FitYogurt
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
FitYogurt
No in-app purchases
Questions
Is Flex AI Workout Trainer & Log free?
Is FitYogurt free?
Which has better reviews, Flex AI Workout Trainer & Log or FitYogurt?
Do Flex AI Workout Trainer & Log or FitYogurt have ads?
Which is updated more often, Flex AI Workout Trainer & Log or FitYogurt?
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