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Best Flex Fitness Training Apps

232+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated June 2026

Flex AI Workout Trainer & Log is the household name in flex fitness training, but it's far from the only option. We track 232+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Flex Fitness Training

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
Flex AI Workout Trainer & Log screenshot 2
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
Fitplan®: Gym & Home Workouts#2

Fitplan®: Gym & Home Workouts by MVMNT Inc.

#1 Personal Trainer App
Strong Contender
💪 Health & Fitness
4.8😐(11K ratings)
FreeAdsIn-App Purchases
Fitplan®: Gym & Home Workouts screenshot 1
Fitplan®: Gym & Home Workouts screenshot 2
Fitplan®: Gym & Home Workouts screenshot 3
Fitplan®: Gym & Home Workouts screenshot 4
Fitplan®: Gym & Home Workouts screenshot 5
Fitplan®: Gym & Home Workouts screenshot 6

Access personalized workout plans from elite trainers, whether you're at home or in the gym. Track your progress, get step-by-step video guidance, and join a supportive community to achieve your fitness goals.

What We Love

  • 🚀 Great variety of workouts
  • 👍 Easy to follow workouts
  • 👍 Keeps you motivated
  • 👍 Helpful instructional videos

Room to Improve

  • 🐛 App crashes and freezes
  • 🐛 Bugs with saving workouts and progress
  • 🐛 Videos not loading properly
LADDER Strength Training Plans#3

LADDER Strength Training Plans by Ladder Technologies, Inc.

Fitness, Workouts, Coaching
Worth Considering
💪 Health & Fitness
4.9😊(159K ratings)
FreeAdsIn-App Purchases
#4in Health & Fitness
LADDER Strength Training Plans screenshot 1
LADDER Strength Training Plans screenshot 2
LADDER Strength Training Plans screenshot 3
LADDER Strength Training Plans screenshot 4
LADDER Strength Training Plans screenshot 5
LADDER Strength Training Plans screenshot 6

This app provides structured, coach-built daily workout plans for strength training, designed for home or gym. It offers in-ear coaching, video demonstrations, and progress tracking to eliminate guesswork and optimize your fitness journey.

What We Love

  • 💪 Challenging and effective workouts
  • 🎓 Knowledgeable and motivating coaches
  • 🤝 Supportive and engaging community
  • 🔄 Varied and progressive programming

Room to Improve

  • 🗣️ Inconsistent coach responsiveness
  • 🔓 Inability to easily switch teams
  • 🙅‍♀️ Excessive prompts for social sharing

More Flex Fitness Training 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
GYDMONE - Gym Workout Planner
GYDMONE - Gym Workout Planner
GYDMONE - Gym Workout Planner
Fitness Weight Lifting Tracker
Free

This app serves as a personal trainer, offering guided workout videos for home or gym. It helps users build muscle, lose weight, and improve fitness with comprehensive plans and smart tracking features. Users can create custom routines or follow expert programs to achieve their fitness goals.

Guided workout videosComprehensive workout plansPersonalized training
💪 Health & Fitness
(348)
free with in-app purchases
6
Flex Fitness 36360
Flex Fitness 36360
Flex Fitness 36360
by Flex Fitness 36360, LLC
Free
💪 Health & Fitness
(0)
7
HWPO - Training app
HWPO - Training app
HWPO - Training app
Fitness Training Programs
Free

Access a variety of fitness programs designed for different lifestyles and goals, inspired by a 5x CrossFit Games Champion. Track progress, view coaching videos, and engage with a supportive community. Programs cater to all skill levels, from quick gym sessions to elite competition training.

Variety of fitness programsPersonalized progress trackingReal-time leaderboard
💪 Health & Fitness
(3.1K)
free
8
TrainHeroic: Strength Training
TrainHeroic: Strength Training
TrainHeroic: Strength Training
Gym Tracker, Workout Log Plans
Free

This app helps users track gym workouts, plan training sessions, and monitor progress. It offers exercise demo videos, coaching points, and features to celebrate achievements like personal records and total volume lifted.

Workout tracker and logWorkout planner and libraryExercise demo videos
💪 Health & Fitness
(1.8K)
free with in-app purchases
9
Caliber: Strength Training
Caliber: Strength Training
Caliber: Strength Training
Workout Planner & Tracker
Free

This app offers science-based strength training, including workout planning, tracking, and exercise tutorials. It supports individual training, group workouts, and offers optional upgrades for personalized plans, advanced features, and one-on-one coaching.

Unlimited workout creation and tracking600+ exercise tutorials with videosWorkout groups for training with friends
💪 Health & Fitness
(5.7K)
free with in-app purchases
10
MTNTOUGH Fitness & Resilience
MTNTOUGH Fitness & Resilience
MTNTOUGH Fitness & Resilience
Hunting / Tactical Training
Free

This app provides functional fitness and resilience training designed for athletes and hunters. It offers daily workouts, mental toughness programs, and expert coaching to build physical and mental strength for demanding activities and everyday life.

Functional fitness workoutsMental toughness trainingDaily workout programs
💪 Health & Fitness
(3.3K)
subscription
11
Flex: Workout Tracker & Log
Flex: Workout Tracker & Log
Flex: Workout Tracker & Log
Workout Tracker & Gym Log
Free

This app logs every workout set, tracks personal records, and generates personalized fitness plans. It also offers nutrition tracking, progress insights, and an AI coach for guidance. Stay motivated with streaks and badges, and share your progress with others.

AI-generated workout plansSet-by-set tracking with rest timerSuperset support
💪 Health & Fitness
(6)
freemium
12
Workout Timer Custom Intervals
Workout Timer Custom Intervals
Workout Timer Custom Intervals
Fitness, Circuit, AMRAP, EMOM
Free

This app offers customizable interval timers for various training styles like HIIT, Tabata, and Crossfit. Track your progress, enjoy background music, and switch between light and dark modes to enhance your fitness routine.

Customizable interval timersSupports HIIT, Tabata, WOD, Crossfit, EMOM, AMRAPHistorical workout tracking
💪 Health & Fitness
(137)
free with in-app purchases
13
GymNext Flex Timer
GymNext Flex Timer
GymNext Flex Timer
Bluetooth Interval Timer
Free

This app offers advanced interval training timing with customizable modes and the ability to control an external LED display. It integrates with wearables and heart rate monitors for a comprehensive workout experience.

Control external LED displaysMultiple customizable timer modes (Tabata, EMOM, etc.)Save and recall favorite workouts
💪 Health & Fitness
(2K)
free
14
Flex Fitness Jungle Gym
Flex Fitness Jungle Gym
Flex Fitness Jungle Gym
by PushPress, Inc.
Free
💪 Health & Fitness
(0)
15
Weight Lifting Tracker: WeFLEX
Weight Lifting Tracker: WeFLEX
Weight Lifting Tracker: WeFLEX
Fitness AI Weightlifting Coach
Free

This app acts as an AI-powered personal trainer and workout planner. It generates customized routines, tracks progress, and offers social features to keep users motivated. Whether you aim to lose weight, build muscle, or improve overall fitness, it adapts to your goals and experience level.

AI-powered workout generatorCustomizable workout plansSmart tracking of sets, reps, and calories
💪 Health & Fitness
(136)
freemium
16
FLEX Training Collective
FLEX Training Collective
FLEX Training Collective
The WeWork for Fitness Pros
Free
💪 Health & Fitness
(0)
17
CoryG Fitness
CoryG Fitness
CoryG Fitness
30 Minute Workouts
Free

Access quick, daily 30-minute workouts designed for busy schedules. Get new routines weekly, monthly programs for strength and leanness, and nutrition guidance. Join a supportive community and track your progress with extensive resources.

Daily 30-minute workoutsNew workouts weeklyMonthly transformation challenges
💪 Health & Fitness
(2.7K)
subscription
18
Barry’s X: Best HIIT Training
Barry’s X: Best HIIT Training
Barry’s X: Best HIIT Training
Strength & Cardio Home Workout
Free

Access a vast library of on-demand fitness classes including cardio, strength training, and stretching, all led by expert instructors. Track your performance with HealthKit integration to gain insights into your workouts and join a supportive digital fitness community.

On-demand fitness contentCardio, Lift, and Stretch workoutsExpert instructor-led classes
💪 Health & Fitness
(2.1K)
subscription
19
HIIT & Tabata: Interval Timer
HIIT & Tabata: Interval Timer
HIIT & Tabata: Interval Timer
Home Workout, Fitness, Gym
Free

This app provides a versatile interval timer for high-intensity interval training (HIIT) and Tabata workouts. It offers professionally designed routines, custom interval creation, and progress tracking, making fitness accessible anywhere.

HIIT and Tabata interval timerProfessionally designed workoutsCustomizable intervals
💪 Health & Fitness
(1.1K)
subscription
20
Map My Fitness Workout Tracker
Map My Fitness Workout Tracker
Map My Fitness Workout Tracker
Daily Exercise & Gym Training
Free

Track all your physical activities, from gym workouts to yoga, and monitor progress with detailed stats. Plan personalized routines, access exercise videos, and sync with wearables and other health apps. Achieve your fitness goals with community support and advanced insights.

Log over 600 activitiesTrack distance, pace, calories, heart rateGPS tracking for outdoor sessions
💪 Health & Fitness
(77K)
free with in-app purchases