Best Muscle Booster App

232+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated June 2026

Looking for free muscle booster app apps? 20 of our 232+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Muscle Booster App

Muscle Booster Workout Tracker#1

Muscle Booster Workout Tracker by WELLTECH APPS LIMITED

Calisthenics, Chair, Gym Plans
Editor's Choice
💪 Health & Fitness
4.6😐(134K ratings)
FreeAdsIn-App Purchases
#57in Health & Fitness
Muscle Booster Workout Tracker screenshot 1
Muscle Booster Workout Tracker screenshot 2
Muscle Booster Workout Tracker screenshot 3
Muscle Booster Workout Tracker screenshot 4
Muscle Booster Workout Tracker screenshot 5
Muscle Booster Workout Tracker screenshot 6

This app acts as a personal trainer, creating customized workout plans for muscle gain, weight loss, or recovery. It offers a vast library of exercises and challenges for home or gym, adapting to your available equipment and goals.

What We Love

  • 🚀 Great workouts
  • 👍 Easy to follow
  • 👍 Variety of exercises
  • 🚀 Customizable plans

Room to Improve

  • 🐛 Buggy app performance
  • 🔒 Lack of free trial
  • 💰 Expensive subscription
Workout for Seniors: SeniorFit#2

Workout for Seniors: SeniorFit by Fast Builder Limited

Chair Tai Chi & Chair Yoga
Strong Contender
💪 Health & Fitness
4.7😊(8.2K ratings)
FreeAdsIn-App Purchases
Workout for Seniors: SeniorFit screenshot 1
Workout for Seniors: SeniorFit screenshot 2
Workout for Seniors: SeniorFit screenshot 3
Workout for Seniors: SeniorFit screenshot 4
Workout for Seniors: SeniorFit screenshot 5
Workout for Seniors: SeniorFit screenshot 6

This app offers low-impact workouts designed for seniors to improve strength, flexibility, and balance. It provides clear instructions, personalized plans, and progress tracking to help older adults stay active and healthy at home.

What We Love

  • 👍 Enjoyable and low-impact workouts
  • 🚀 Easy to follow instructions
  • 👍 Variety of exercises
  • 🚀 Customizable workout plans

Room to Improve

  • 🐛 App crashes or freezes
  • 🔑 Subscription required to access full features
  • 🔍 Unclear exercise demonstrations
Muscle Monster Workout Planner#3

Muscle Monster Workout Planner by TechPioneers Limited

AI Gym & Home Fitness Exercise
Worth Considering
💪 Health & Fitness
4.7😊(8.9K ratings)
FreeIn-App Purchases
Muscle Monster Workout Planner screenshot 1
Muscle Monster Workout Planner screenshot 2
Muscle Monster Workout Planner screenshot 3
Muscle Monster Workout Planner screenshot 4
Muscle Monster Workout Planner screenshot 5
Muscle Monster Workout Planner screenshot 6

This AI-driven fitness app creates personalized workout plans for fat loss, muscle gain, and overall well-being. It offers over 1200 exercises and 500 workouts, catering to various equipment and fitness levels. Track your progress with detailed reports and integrate with Apple Health for a comprehensive view of your fitness journey.

What We Love

  • 🚀 Easy to use
  • 👍 Personalized workout plans
  • 🚀 Intuitive interface
  • 👍 Variety of exercises

Room to Improve

  • 🐛 Syncing issues across devices
  • 💰 Premium features behind paywall
  • 🐛 Occasional app freezes

More Muscle Booster App apps to explore

4
Home Workout - No Equipments
Home Workout - No Equipments
Home Workout - No Equipments
Workout Tracker, Fitness Coach
Free

This app provides personalized fitness plans and a wide variety of bodyweight exercises for users to build muscle, lose weight, or stay fit. It requires no equipment and can be used anywhere, anytime, with features like workout tracking and video guides.

Personalized workout plans500+ varied workoutsSmart workout tracker
💪 Health & Fitness
(115K)
free with in-app purchases
5
Six Pack in 30 Days:Get Muscle
Six Pack in 30 Days:Get Muscle
Six Pack in 30 Days:Get Muscle
Crunch, Core & Abs Workout
Free

Achieve your fitness goals with guided workout programs designed to reduce belly fat and build core strength. Access effective routines anytime, anywhere, with voice and video instructions. Track your progress and integrate with Apple Health for a comprehensive fitness experience.

Short, effective abs and core workoutsVoice and video instructionsNo equipment needed
💪 Health & Fitness
(31K)
subscription
6
Fitness App: Gym Workout Plan
Fitness App: Gym Workout Plan
Fitness App: Gym Workout Plan
Exercise tracker, home routine
Free

This app offers comprehensive workout plans and diet guidance for various fitness goals, including weight loss, muscle gain, and toning. It features a vast exercise library with 3D animations, a personal workout diary, and the option to connect with certified personal coaches for tailored online training and nutrition plans.

Full body workout plans3D exercise animationsPersonal workout diary
💪 Health & Fitness
(34K)
free with in-app purchases
7
Sweat: Fitness App For Women
Sweat: Fitness App For Women
Sweat: Fitness App For Women
Workout At Home Or In The Gym
Free

Access a vast library of workouts designed for women, from HIIT to yoga, with guidance from world-class trainers. Track progress, join community challenges, and access educational content on fitness and nutrition. Train at home or in the gym with flexible options.

Home and gym workoutsMultiple training styles (HIIT, yoga, strength)World-class trainer programs
💪 Health & Fitness
(43K)
subscription
8
Workouts For Men: Gym & Home
Workouts For Men: Gym & Home
Workouts For Men: Gym & Home
Build Muscles & Lose Weight
Free

This app provides personalized workout routines and meal plans to help users build muscle, lose fat, and stay motivated. It offers clear exercise instructions with videos, health app integration, and expert guidance for achieving fitness goals.

Hundreds of gym and home workoutsClear exercise instructions with videosPersonalized meal plans and recipes
💪 Health & Fitness
(26K)
subscription
9
Nike Training Club
Nike Training Club
Nike Training Club
Training and Workouts
Free

Access expert-led workout programs and coaching for strength, conditioning, yoga, and mindfulness. Train at the gym or at home with guidance for all fitness levels. Track your progress and achieve your fitness goals.

Expert-led workout programmingGym and home workoutsStrength, conditioning, yoga, pilates
💪 Health & Fitness
(277K)
free
10
MadMuscles: Workouts & Diet
MadMuscles: Workouts & Diet
MadMuscles: Workouts & Diet
Exercises & Meal Plan
Free

This fitness app creates personalized workout plans and meal plans to help users achieve their fitness goals, whether it's gaining muscle, losing weight, or getting shredded. It offers a variety of workout styles, video tutorials, and motivational features to make fitness accessible and enjoyable.

Personalized workout plansDiverse workout styles (strength, calisthenics, yoga)Video exercise tutorials
💪 Health & Fitness
(125K)
free with in-app purchases
11
FitOn Workouts & Fitness Plans
FitOn Workouts & Fitness Plans
FitOn Workouts & Fitness Plans
Cardio, Yoga & Pilates classes
Free

Access a vast library of free exercise videos and personalized fitness plans for weight loss and overall well-being. Work out with celebrity trainers, explore various class types, and enjoy guided meditations to reduce stress and improve sleep.

Free exercise videosPersonalized workout plansClasses with celebrity trainers
💪 Health & Fitness
(283K)
freemium
12
Chair Workout for Men: Muscle
Chair Workout for Men: Muscle
Chair Workout for Men: Muscle
Chair Yoga for Seniors at Home
Free

This app offers low-impact chair exercises designed for men over 50 to build muscle, lose belly fat, and improve strength and flexibility. Get personalized routines and track progress with short, daily workouts.

Low-impact chair exercisesTargeted fat loss and muscle buildingPersonalized workout plans
💪 Health & Fitness
(1.2K)
subscription
13
LADDER Strength Training Plans
LADDER Strength Training Plans
LADDER Strength Training Plans
Fitness, Workouts, Coaching
Free

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.

Daily structured workout plansExpert coach-built programsIn-ear coaching and video demos
💪 Health & Fitness
(152K)
free with in-app purchases
14
Workout Planner - Heavy
Workout Planner - Heavy
Workout Planner - Heavy
Home & Gym Workout Planner Log
Free

This app offers AI-driven workout plans personalized to your fitness goals, schedule, and progress. It adapts in real-time to maximize strength, muscle growth, or weight loss with a vast exercise library and advanced tracking.

AI-tailored workoutsProgressive overload calculationExtensive exercise library with tutorials
💪 Health & Fitness
(1.1K)
free with in-app purchases
15
Alive by Whitney Simmons
Alive by Whitney Simmons
Alive by Whitney Simmons
Workout and Fitness App
Free

This app offers a safe and empowering space for women to build strength, confidence, and lifelong habits through guided workouts and wellness challenges. It provides expert-designed programs, daily workouts, and progress tracking to support your fitness journey.

20+ guided workout programs30-day wellness challenges200+ daily workouts
💪 Health & Fitness
(44K)
freemium
16
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
17
ProFit: Workout Planner
ProFit: Workout Planner
ProFit: Workout Planner
Muscle Training in the Gym
Free

This app guides you through personalized workouts to build strength, lose weight, and improve performance. It offers detailed exercise instructions, custom workout creation, and progress tracking with interactive graphs. Access meal plans and training programs designed by professionals.

350+ exercises with detailed descriptionsHigh-quality photo and video guidanceCustomizable workout plans
💪 Health & Fitness
(43K)
free with in-app purchases
18
Fitness AI Gym Workout Planner
Fitness AI Gym Workout Planner
Fitness AI Gym Workout Planner
Personal Trainer: Muscle Coach
Free

This app uses an advanced algorithm to create personalized workout plans for home or gym. It optimizes sets, reps, and weights to help you build muscle, get toned, or lose weight efficiently. Track your progress and achieve your fitness goals with data-driven routines.

Personalized AI workout plansOptimized sets, reps, and weightsHome and gym workout options
💪 Health & Fitness
(56K)
free with in-app purchases
19
Muscle Builder & Workout Plans
Muscle Builder & Workout Plans
Muscle Builder & Workout Plans
Strength Training ~Gym Booster
Free

This fitness app offers a variety of home-based workouts and personalized training plans to help users achieve their fitness goals. It includes video demonstrations for exercises and progress tracking features to keep users motivated. The app is designed to be convenient, effective, and affordable.

Customizable workoutsPersonalized training plansVideo exercise demonstrations
💪 Health & Fitness
(1.6K)
subscription
20
JustFit: Lazy Workout & Fit
JustFit: Lazy Workout & Fit
JustFit: Lazy Workout & Fit
Female Fitness and Exercise
Free

This app offers fun, beginner-friendly workouts, including unique wall Pilates routines, designed for women. Track your progress and get personalized tips to achieve your fitness goals without needing any equipment. Make fitness enjoyable and accessible from anywhere.

Personalized workout plansWall Pilates exercisesBelly and core workouts
💪 Health & Fitness
(213K)
subscription