Description

Your AI-Powered Gym Tracker & Personal Trainer
Smash your fitness goals with Flex – the ultimate AI workout tracker that plans, tracks, and adapts to your progress. No more guesswork! Whether you're lifting weights, building muscle, or losing weight, Flex helps you stay on track and push past plateaux.
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Smarter Gym Tracking, Faster Progress
- Track every lift & rep automatically – no need for a manual training diary.
- AI-driven workouts that adjust difficulty based on your performance.
- Track progress visually with real-time charts and streaks.
- Sync with Apple Watch for hands-free workout tracking.
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Your AI Personal Trainer
- Get expert guidance from an AI fitness coach that adapts to you.
- Auto-adjusts weight, reps, and sets to maximise strength gains.
- Receive reminders & real-time coaching on form, rest time, and intensity.
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Build Muscle, Lose Weight, Stay Motivated
- Follow structured workout programmes or create your own.
- Log every gym session with our lifting log and training diary.
- Compete & compare progress with friends in the Flex community.
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Free vs. Premium Plans
*Free Plan:
- Access premade workouts
- Track workouts & progress
- Customise your training plans
*Flex Premium (£8.99/month or £54.99/year):
- Apple Watch logging
- Auto Progression: Adjusts difficulty automatically
- Premium training programmes & freestyle workouts
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Download Flex Now – Your AI Coach Awaits!
Smash PBs. Track Gains. Train Smarter.
Join thousands of lifters & athletes who trust Flex to track workout progress and take their gym routine to the next level.
Download now and start lifting smarter!

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Follow us for tips & updates:
Instagram: @flex.ai
TikTok: @flex.app
Website: flexfitnessapp.com
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In-Apps

Premium Yearly Subscription
$1,790.00
Premium Subscription Monthly
$300.00

Screenshots

FAQ

  • Is Flex AI Workout Trainer & Log free?

    Yes, Flex AI Workout Trainer & Log is free to download, however it contains in-app purchases or subscription offerings.

  • Is Flex AI Workout Trainer & Log legit?

    ✅ The Flex AI Workout Trainer & Log app appears to be high-quality and legitimate. Users are very satisfied.

    Thanks for the vote

  • How much does Flex AI Workout Trainer & Log cost?

    Flex AI Workout Trainer & Log has several in-app purchases/subscriptions, the average in-app price is $1,045.00.

  • What is Flex AI Workout Trainer & Log revenue?

    To get estimated revenue of Flex AI Workout Trainer & Log app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.

User Rating

5 out of 5

1 ratings in Taiwan

5 star
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Ratings History

Reviews

Not a free app

MissieSk on

United States

The app promotes that it’s free but much of the content is available only through a paid subscription. You can search online for workout routines and create your own workout which is rather handy

I 🩵 It

didiacorn on

United States

I admire the widget because it allows me to see what I have planned for the day without opening the app, I recently just updated the app and found a whole new adjustments and changes that I immediately heavily fell in love with. • I like how I can add a certain workout to any day, whether its biweekly, weekly, etc. • I love the gym community so this is pretty much my comfort spot, and I love how much people are sharing their progress! • And I like when I'm done creating a workout for some other day, It's based on an estimate on how many calories I burn, and how long it'll take for me to finish that workout. I love this Workout overall, it's helped me watch my calorie burning, steps taking, and shows me how to correctly do a couple of workouts that I haven't done before.

Very fun

ianl212 on

United States

Very easy to use. My favorite workout tracker. I love the 1 rep max calculator and rankings against other users. Super fun

Almost great

Brinkmanc on

United States

I was so excited to use this app but after a few weeks, I canceled my subscription. It has a beautiful design and I love that you can create custom exercises but the plate calculator and AI progression are very glitchy and not working properly. This app may be great if they fix glitches but for now, I’ll stick with Alpha Progression.

Good for detailed tracking

wakeup2 on

United States

Great for saving workouts whether these are cardio, calisthenics, or strength training. The app has a bank of exercises to choose from and if needed, you can create custom ones. You can group exercises into supersets and set rest times between reps. Also, if competition and point systems motivate you to exercise, then this app is for you! You earn points for every workout and can unlock achievements for more points. If you really want to unleash your competitiveness, view the rankings. It’ll really humble you. I left off a star because it’d be more convenient if I could add workouts anytime like the MyFitness App, which allows you to manually fill out the date and time for any previous day. I like this because sometimes I forget to track workouts and this app (at least the free version) doesn’t allow you to add a workout to a previous day.

I like it

vassaloppet on

United States

This is really my first experience with an app like this, but I find it is really easy to use and it keeps me motivated and focused. Highly recommend.

Great App, Some drawbacks

Susaybaka on

United States

I love this app so far and it is very convenient. The best parts by far are the timer and rest time features. They help so much with staying on track. The app is very functional without premium to get an idea of how it works without having to get a free trial. But after using it premium is such a great luxury. The one gripe I have with the app is the fact that the social and achievement aspects are so hard to navigate. One thing they could do to really finish this app is to add the muscle group body from arrow, and implement a similar pr focused social and achievement aspect. Love you Flex Fitness!

Highest Quality Workout Recorder

Bug Much? on

United States

The UI looks clean, everything works smoothly and you don't need Pro to enjoy it

Flex Rating

Dylan Myllymaki on

United States

Best workout app out there

Worth every penny

Joshkrat on

United States

If you’ve been looking for a workout app, you can stop right here. Really and truly, this app is made for first timers as well as the people looking to take their workouts to the next level. It doesn’t matter where you’re at in your fitness journey, this app will help you get where you wanna be. Premade workouts, plans, and a community of supportive people. I’ve been using it for three weeks so far and I can already see changes in myself. I promise you this is the app you’re looking for.

Store Rankings

Ranking History
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Category Rankings
Chart
Category
Rank
Top Grossing
70
Top Free
452

Keywords

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