Comparison

Flex AI Workout Trainer & Log vs F1T

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • AI personal trainer
  • Real-time form feedback
  • Personalized workout plans
  • Adaptive progression
  • Strength tracking
  • Community leaderboards
  • Apple Watch integration
Features
Read full description

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.

About

F1T

This interval timer helps you manage work and rest periods for various fitness routines like HIIT, circuit training, and boxing. It offers customizable intervals, voice prompts, and workout history tracking, working in the background with a clear display.

Highlights
  • Customizable work and rest intervals
  • Full-screen, bright display
  • Works in background with locked screen
  • Voice prompts and sound alerts
  • Workout history tracking
  • Templates for HIIT, Tabata, EMOM, AMRAP
Read full description

Perfect for individual or group use, whether at home, on the track, or in the gym. Welcome to this easy-to-use app that helps you keep track of your work and rest periods during workouts. This interval timer will be an invaluable tool for you, whether you're doing HIIT workouts with high-intensity intervals, cycling, running, boxing, exercising, or stretching. It’s designed to help you manage intense exercise periods and rest intervals, making it perfect for optimizing your HIIT training and other fitness routines. SIMPLE AND USEFUL INTERVAL TIMER - Easy to use and understand - Bright, full-screen display with a font that's easily visible from a distance, even on small screens - Works in the background while you use other apps - Pause your workout anytime - No interruptions: the timer continues running even with a locked screen - Has a battery-saving mode for low battery situations ADVANCED CUSTOMIZATION - Customize all your intervals exactly the way you need for your specific workout - Adjust warm-up,exercise, rest, recovery, and cooldown intervals to fit your workout plan - Easily change the number of sets and cycles to match your fitness level - Switch between intervals smoothly during your workout - Includes templates for different training methods like HIIT, EMOM, AMRAP, Tabata, and Circuit Training TRACK AND CUSTOMIZE YOUR WORKOUTS - Provides voice prompts for interval names and upcoming interval warnings. - Offers various sound alerts and voice notifications for intervals. - Tracks your workout history and intensity levels. OPTIMIZE ALL OF YOUR ACTIVITIES + Tabata timer + Boxing round timer + HIIT training + Crossfit + Circuit training + Fitness routines + Home workouts + Calisthenics circuit timer + Yoga timer and more! Download now and take your workouts to the next level! The app offers a free trial with an optional annual subscription. After the trial, a yearly subscription will automatically start and be charged to your Apple account. The subscription renews automatically unless you turn off auto-renewal at least 24 hours before the current period ends. You can’t cancel during the current period, but you can manage and turn off auto-renewal in your Apple Account Settings. Any unused portion of the free trial will be forfeited upon subscription purchase. Privacy Policy: https://branched-chameleon-c9e.notion.site/Privacy-Policy-157da911d0128022b579f38948d41609?pvs=4 Terms of Use: https://branched-chameleon-c9e.notion.site/EULA-157da911d012800382d9c4010274c30b?pvs=44

Screenshots

Flex AI Workout Trainer & Log4 screens
F1T4 screens

Verdict

The call

The clearest difference is rating: F1T at 5.0 against Flex AI Workout Trainer & Log's 4.6. Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 1). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $1.99 per month and F1T sells 8 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

F1T 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.

UpkeepUpdate frequency

Flex AI Workout Trainer & Log ships an update every 9 days, F1T every 6 days. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 8 level
Flex AI Workout Trainer & Log versus F1T: the parameters behind the verdict, then further details
ParameterFlex AI Workout Trainer & LogF1T
PriceFreeFree
Rating4.6 (2.4K ratings)5.0 (1 ratings) — better
Positive reviews69.3% of reviews—
Number of ratings2.4K — better1
Update frequencyEvery 9 daysEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size574 MB34 MB
Age rating17+4+
DeveloperFlex Artificial Intelligence Inc.Tymofii Tymofieiev

Customer experience

Flex AI Workout Trainer & Log

All ratings2,405 ratings
Positive92.0%
Neutral2.6%
Negative5.4%
Written reviews303 reviews
Positive69.3%
Neutral6.6%
Negative24.1%

F1T

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

F1T

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Flex AI Workout Trainer & Log

Subscriptions6
  • Premium Subscription Monthly$1.991 Month
  • Premium Plus Monthly$2.991 Month
  • Premium Yearly Subscription$9.991 Year
Show 3 more
  • Premium Plus Family Monthly$9.991 Month
  • Premium Plus Yearly7 Days trial$19.991 Year
  • Premium Plus Family Yearly7 Days trial$49.991 Year
One-time2
  • 1 Month Free PremiumFree
  • Lifetime Free PremiumFree
8 purchases

F1T

Subscriptions6
  • Unlimited access (PRO)$1.997 Days
  • Unlimited access (PRO)$2.297 Days
  • Unlimited access (PRO)$4.991 Month
Show 3 more
  • Unlimited access (PRO)$6.991 Month
  • Unlimited access (PRO)7 Days trial$17.991 Year
  • Unlimited access (PRO)7 Days trial$29.991 Year
One-time2
  • Free Lifetime PROFree
  • Lifetime PRO$29.99

Questions

Is Flex AI Workout Trainer & Log free?
Flex AI Workout Trainer & Log is free to download, with in-app purchases available.
Is F1T free?
F1T is free to download, with in-app purchases available.
Which has better reviews, Flex AI Workout Trainer & Log or F1T?
F1T is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while F1T averages 5.0 from 1 ratings.
Do Flex AI Workout Trainer & Log or F1T have ads?
Neither Flex AI Workout Trainer & Log nor F1T shows ads.
Which is updated more often, Flex AI Workout Trainer & Log or F1T?
Flex AI Workout Trainer & Log ships an update every 9 days, and F1T every 6 days. Most recently, Flex AI Workout Trainer & Log was updated on September 26, 2026 and F1T on September 10, 2026.

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