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Best Flex Fitness Workout Apps

217+ iOS apps curated and reviewed

4.0 avg rating
20 free apps
Updated June 2026

The best flex fitness workout apps on iPhone average 4.0★ across 217+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Flex Fitness Workout

Flex AI Workout Trainer & Log#1

Flex AI Workout Trainer & Log by Flex Artificial Intelligence Inc.

Fitness Tracker & Gym Planner
Editor's Choice
💪 Health & Fitness
4.7😊(2.4K ratings)
FreeIn-App Purchases
Flex AI Workout Trainer & Log screenshot 1
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Flex AI Workout Trainer & Log screenshot 3
Flex AI Workout Trainer & Log screenshot 4
Flex AI Workout Trainer & Log screenshot 5
Flex AI Workout Trainer & Log screenshot 6

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.

What We Love

  • 🚀 Detailed workout tracking
  • 👍 Customizable workouts
  • 🔒 Comprehensive exercise library
  • 💡 Helpful progress tracking

Room to Improve

  • 🐛 Glitches and bugs
  • 💰 Expensive premium subscription
  • 🔒 Limited functionality without premium
Flex Fitness#2

Flex Fitness by AJWAN INTERNATIONAL CO. WLL

Fitness and Health
Strong Contender
💪 Health & Fitness
1.0(1 ratings)
Free
Flex Fitness screenshot 1
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This app promotes a lasting, active lifestyle by offering a high-quality fitness experience at an affordable cost. It aims to enhance people's lives and create a healthier world for everyone.

More Flex Fitness Workout apps to explore

4
Macrofit Fitness
Macrofit Fitness
Macrofit Fitness
The Fitness App
Free

Access diverse fitness and sport-specific training programs led by professional athletes and trainers. Includes curated nutrition options, macro tracking, and workout logging to help you achieve your fitness goals.

Sport-specific workout programsProfessional athlete instructorsCurated nutrition and meal plans
💪 Health & Fitness
(5.8K)
free with in-app purchases
5
Flex Fitness Woodland
Flex Fitness Woodland
Flex Fitness Woodland
by flex fitness woodland LLC
Free

Easily book fitness classes, manage your membership, and stay updated on services. Make reservations, join waitlists, and purchase class packages directly from your device.

Book classesManage reservationsJoin waitlists
💪 Health & Fitness
(2)
free
6
Texas Flex
Texas Flex
Texas Flex
Texas Flex Fitness Members
Free
💪 Health & Fitness
(0)
7
Flex Fitness 36360
Flex Fitness 36360
Flex Fitness 36360
by Flex Fitness 36360, LLC
Free
💪 Health & Fitness
(0)
8
Flex Fitness Members
Flex Fitness Members
Flex Fitness Members
by Flex Fitness New Zealand Ltd.
Free
💪 Health & Fitness
(0)
9
Texas Flex Fitness
Texas Flex Fitness
Texas Flex Fitness
by Texas Flex Fitness LLC
Free

This comprehensive fitness platform helps you track daily activities, body metrics, and progress. Access over 2000 exercises with 3D demonstrations, preset workouts, or create your own. Earn badges and sync with Apple Health for a complete fitness journey.

Track daily fitness activitiesMonitor weight and body metricsOver 2000 exercises with 3D demos
💪 Health & Fitness
(3)
free
10
Flex Fitness Clubs
Flex Fitness Clubs
Flex Fitness Clubs
by Flex Fitness Club Inc.
Free

Track workouts, meals, and progress towards your fitness goals with personalized plans and real-time coach messaging. Connect wearable devices for instant body stat syncing and receive reminders for scheduled activities.

Workout and meal trackingPersonalized training plansProgress monitoring
💪 Health & Fitness
(0)
free
11
Fitify: Home Workout, AI Coach
Fitify: Home Workout, AI Coach
Fitify: Home Workout, AI Coach
Bodyweight exercises & Fitness
Free

Achieve your fitness goals at home with personalized workout plans and over 900 exercises. Track your progress with a body fat scanner and enjoy routines that require no equipment or utilize various fitness tools. Work out anytime, anywhere with voice coaching and HD video demonstrations.

Personalized fitness plansOver 900 exercises (bodyweight & tools)Body fat and muscle mass tracking
💪 Health & Fitness
(11K)
freemium
12
Yoga for Weight Loss & more
Yoga for Weight Loss & more
Yoga for Weight Loss & more
Yoga Workout Classes for Home
Free

Access guided yoga sessions for weight loss, strength, flexibility, and stress relief. Personalized plans and progress tracking help build a consistent practice with world-class teachers. Sessions range from 5 minutes to an hour, fitting any schedule.

Personalized yoga plansGuided yoga sessionsProgress tracking
💪 Health & Fitness
(3.6K)
subscription
13
Flexer App
Flexer App
Flexer App
Amazon Flex Block Grabber
Free

Automate the process of finding and accepting Amazon Flex delivery offers. Configure the app to search and grab opportunities for you, eliminating the need for manual refreshing and tapping.

Automated offer searchingAutomatic offer acceptanceManual refresh elimination
📊 Productivity
(2.5K)
free
14
Flex Fitness Jungle Gym
Flex Fitness Jungle Gym
Flex Fitness Jungle Gym
by PushPress, Inc.
Free
💪 Health & Fitness
(0)
15
FLEX Health & Fitness
FLEX Health & Fitness
FLEX Health & Fitness
by Future Flex LLC
Free
💪 Health & Fitness
(0)
16
Gym Workout Planner - Gym Plan
Gym Workout Planner - Gym Plan
Gym Workout Planner - Gym Plan
Weight Lifting Muscle Tracker
Free

This app helps you plan and track your gym workouts for faster progress. Choose from a variety of workout plans or customize your own, track sets, reps, and weights, and monitor your personal bests to stay motivated.

Workout plan selectionCustomizable routinesProgress tracking
💪 Health & Fitness
(673)
subscription
17
Workout Planner MuscleFit
Workout Planner MuscleFit
Workout Planner MuscleFit
Chair Workout For Men
Free

This app provides personalized 28-day calisthenics and chair workout programs for home fitness. It offers over 500 equipment-free exercises with audio/video guidance, adapting routines weekly based on progress. It also includes features for injury prevention and muscle recovery.

28-day calisthenics and chair workout programsOver 500 equipment-free exercisesAudio and video instructions
💪 Health & Fitness
(6.3K)
subscription
18
Ab Workouts MMA+ FREE Core Strength Abdominal Flex
Ab Workouts MMA+ FREE Core Strength Abdominal Flex
Ab Workouts MMA+ FREE Core Strength Abdominal Flex
by App And Away Studios LLP
Free

Strengthen your core and learn mixed martial arts ground fighting techniques with this app. Developed by a Brazilian Jiu Jitsu expert, it offers unique exercises targeting all abdominal muscles, suitable for any fitness level. Improve fighting skills and build a strong core without special equipment.

24 Distinct MMA Ab Workout Exercises3 Intensity Levels3 Difficulty Levels
💪 Health & Fitness
(9)
free with in-app purchases
19
KettleFlex Fitness
KettleFlex Fitness
KettleFlex Fitness
by KettleFlex Fitness
Free
💪 Health & Fitness
(0)
20
The Flex Fitness
The Flex Fitness
The Flex Fitness
by Myanmar Lifestyle Company Limited
Free

Easily book fitness classes and manage your gym membership from your phone. Make reservations, join waitlists, and check your profile and membership status on the go.

Book fitness classesManage membershipCheck profile status
💪 Health & Fitness
(3)
free