Flex AI Workout Trainer & Log

Flex is the free, fun, and simple workout app that does the planning and tracking for you. Focus on your workout and achieve your goals with our fitness tracker that automatically sets the pace and difficulty for you based on your performance. Whether you’re looking to build muscle or shedding pounds to reach your weight goals, Flex is here for you.
Find hundreds of workouts and programs for your exercise preference – from lifting weights to cardio. Find and use the most effective workouts and programs designed by personal trainers, tailored to your goal and whether you work out at the gym or at home.
Forget about researching exercises or programs and keeping track of all your progress. Flex handles that with a useful exercise tracker that makes working out more engaging. Get closer to your muscle building and weight goals by keeping an eye on workout streaks and charts that monitor your progress. You can even view your friends’ training and compete alongside the entire Flex community.
Flex is the perfect fitness tracker no matter your time commitment, physical goals, experience, or equipment.
Flex’s free fitness coach will lead you through your workout step by step, telling you which exercises to do, how to do them, and how long to rest for optimal results. Get notified when to start your next set, change exercises on the fly, and even control your music – all with Flex.
Already have a fitness program you use or want to customize your own?
Edit one of our programs or build your own into Flex with the custom plan builder.
FLEX FEATURES
ALL-IN-ONE FITNESS TRACKER
- Lifting weights or cardio training, Flex tracks your gym workouts seamlessly
- Get intuitive charts and streaks to view progress and keep you motivated
- Flex can automatically change your exercise difficulty to adjust as you progress
- Apple Watch compatibility so you can focus on workouts and not your phone
MUSCLE BUILDING OR WEIGHT LOSS
- Whether it’s lifting weights or cardio training, Flex does it all
- Crush your weight goals with the exercise tracker made for you
- Hit your daily workout, build your streak on Flex, and stay on track
HELPFUL FITNESS COACH & COMMUNITY
- Get your own personal guide for exercises with in-app tutorials
- Learn what you need to know about lifting weights, ideal exercises, and optimal rest times
- Progress and stay motivated by competing and comparing results with friends and the entire Flex community
Flex lets you work out your way with two plans:
Free:
• Basic premade workout programs
• Build or customize your own program and freestyle workouts
• Workout guide and logger
• Share your workouts and routines with friends
• View your progress and stay consistent: workout calendar, exercise stats, streak, bodyweight tracker, calories tracker, steps tracker, workout notifications
Flex Premium ($9.99/month or $59.99/year):
• Logging on the Apple Watch app
• Auto Progression: Automatically increases or decreases the difficulty for your next session.
• Unlock Premium programs
• Unlock Premium freestyle workouts
• Premium workout experience: music integration, plate calculator, etc.
Download the best free and fun workout app to build muscle or lose weight fast. Guided workouts, progress tracking, and community support – Flex is the perfect way to hit your fitness goals.
Follow us and our craziness:
- Instagram @flex.ai
- TikTok @flex.app
- flexfitnessapp.com