Flex AI Workout Trainer & Log vs SHRED
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.
SHRED
This app empowers fitness instructors to create professional-quality workout videos using just their iPhone. It simplifies the production process with AI tools and automated features, allowing creators to share their classes with a global audience.
- Studio-quality content creation
- AI-based tooling
- Automated timers and animations
- Class customization
- No expensive equipment needed
- Access to global user base
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Welcome to Shred’s Creator Studio — the most powerful tool for fitness creators on the planet. Creator Studio allows anyone to produce studio-quality fitness content right in their living room. With an easy step-by-step process, smart AI-based tooling, and fun class customizations, you’re just a few taps a way from letting the world experience your incredible workout classes. What you’ll love about Creator Studio: + No need for expensive camera equipment — simply grab an iPhone and you’re good to go! + Forget expensive post-production. Our system automates timers, animations, rest periods, and more! + Get access to Shred’s millions of users around the world to grow your following as more people take your classes Access to Creator Studio is currently invite-only. If you’re interested in joining, please go to www.shred.app/creator to apply. Privacy Policy: https://www.shred.app/privacy-creator Terms of Use: https://www.shred.app/terms-creator
Screenshots
Verdict
The clearest difference is in-app purchases: SHRED at none against Flex AI Workout Trainer & Log's 8. SHRED also leads on review sentiment (100% vs 69%) and rating (5.0 vs 4.6). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 6) and update cadence (every 9 days vs every 3 weeks). On price, 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. SHRED asks for nothing beyond the download.
SHRED 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 6, so its average is the more settled of the two. Written reviews point the same way: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 100% of SHRED's.
Flex AI Workout Trainer & Log ships an update every 9 days, SHRED every 3 weeks. The most recent releases landed on October 2, 2026 and September 20, 2026 respectively.
| Parameter | Flex AI Workout Trainer & Log | SHRED |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 69.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 2.4K — better | 6 |
| Update frequency | Every 9 days — better | Every 3 weeks |
| 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 | 13.0 — better |
| Further details — not scored | ||
| Size | 574 MB | 46 MB |
| Age rating | 17+ | 4+ |
| Developer | Flex Artificial Intelligence Inc. | Shred Labs, LLC |
Customer experience
Flex AI Workout Trainer & Log
SHRED
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
SHRED
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
SHRED
No in-app purchases
Questions
Is Flex AI Workout Trainer & Log free?
Is SHRED free?
Which has better reviews, Flex AI Workout Trainer & Log or SHRED?
Do Flex AI Workout Trainer & Log or SHRED have ads?
Which is updated more often, Flex AI Workout Trainer & Log or SHRED?
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