Muscle Booster Workout Planner

In-app purchases
4.5
243K reviews
10M+
Downloads
Content rating
Everyone
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About this app

Muscle Booster is a workout app designed for both men and women who want to build muscle, stay healthy, and feel great. Our Workout Planner acts as a personal trainer alternative, helping you improve your physical fitness whether you work out at home or in the gym.

From muscle-building gym programs to calisthenics and weight loss routines, Muscle Booster creates a personalized workout plan based on your goals and physical data. No matter where you train, the app’s smart algorithm guides you through sets, rep ranges, and rest intervals to help you reach your goals more efficiently.

WHY WORK OUT WITH MUSCLE BOOSTER?
Get access to a library of 1,000+ workouts tailored to both men and women that are perfect for building muscle, losing weight, recovering, and more.
Use the Workout Player for audio tips, guided instructions, muscle group targeting, and a built-in workout/rest timer (Apple Watch compatible).
Join challenges tailored to your profile! You’ll find every kind of workout from Morning Routines and Calisthenics to Fat Burning, Chair Workouts, Dumbbells, 6-Pack Training, and Injury Recovery.
Create custom workout plans based on your available equipment, including free weights, machines, resistance bands, or bodyweight options.
Each plan includes an estimated workout time and calorie burn.
After each workout, the tracker shows which muscle groups to train next and which need recovery.
Stay motivated by hitting Mini Milestones and feeling the positive effects of consistent training.

HOW DOES THE WORKOUT PLANNER WORK?
Set your fitness goals: weight loss, muscle gain, strength, flexibility, or injury recovery
Choose your target areas: arms, core, abs, chest, stomach, legs, shoulders, or full-body
Enter your personal details: age, gender, height, weight, and fitness level
Select your preferred workout location: home or gym
Pick the days and times that work best for your schedule
Choose the equipment you have or go with a calisthenics-based plan
Note any health conditions or physical limitations, such as injuries or cardiovascular concerns
Set personal reminders so you never miss a workout
Take an AI fitness test to evaluate your current level
Get a personalized workout plan tailored to your needs

Muscle Booster is the ultimate solution for effective gym and home workouts. Take on the challenge! Lose weight, build strength and muscle, and transform your life with a custom training plan designed just for you.

Download the Muscle Booster app today to boost your energy, fitness, and overall health with effective, personalized workouts.

SUBSCRIPTION INFO
You can download the app for free and access limited functionality. To unlock the full experience, a subscription is required.

Additional in-app purchases (e.g., fitness guides, VIP customer support) may be offered for a one-time or recurring fee. These are optional and not required for your subscription. All offers will be clearly presented in the app.

Terms of Use: https://legal.muscle-booster.io/page/terms-of-use
Privacy Notice: https://legal.muscle-booster.io/page/privacy-policy
Updated on
Aug 20, 2025
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Financial info and Device or other IDs
This app may collect these data types
Location, Personal info and 5 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.5
239K reviews
Jason Montoya
August 13, 2025
Hello! I've been using this app for over a year! I've lost over 50 lbs. I feel great and making progress every day! I just wanted to say that this is a great app! And the updates have been making the app better every time. Just wanted to say, it will be great if we can add extra rounds during our workout sessions, and also add extra time for workouts during customizing your your workout. Like for example you just want forearms & abs, so it just let's you do 30 mins. Otherwise, it has been GREAT!
4 people found this review helpful
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WELLTECH APPS LIMITED
August 14, 2025
Hi, Jason. Thanks so much for your positive feedback! It’s great to hear that you’re enjoying the app. If you're open to sharing more details about your experience, I’d love to learn more. Feel free to send me an email at adam.support@muscle-booster.io. - Adam, MuscleBooster
John Nitis
August 10, 2025
Some of the workouts do not provide enough time to get into position. Some of the new workouts require you to attempt to pause screen to study physical configuration. The screen often doesn't pause until multiple attempts are made. After initially losing a few pounds, along with walking an average of six miles a day, during this wasted time, I have now rebounded to my original weight. Thanks for nothing. Don't appreciate taking my money and auto debuting me an additional $66.
2 people found this review helpful
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WELLTECH APPS LIMITED
August 11, 2025
Hi, John! Thank you for sharing your feedback. I'm sorry to hear about your experience with the workout timings and screen pausing. Your insights are important, and we’ve flagged this internally. i will contact you shortly from support@muscle-booster.io to help you further. - Adam, MuscleBooster
Katherine Dwyer
August 18, 2025
This is a very basic app. There is no where on the app to track the weight that you are using or your body composition. It determines your BMI by height and weight alone, which is inaccurate if you already have muscle mass. For $80 a year, it doesn't give you enough. Customer service is a joke. I reached out a potential refund and heard nothing. Don't try this app.
1 person found this review helpful
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WELLTECH APPS LIMITED
August 18, 2025
Hi, Katherine! Thank you for sharing your feedback. I'm sorry to hear that you're having issues with the tracking features and BMI calculation. Your insights are truly valuable, and we’re looking into the customer service responsiveness. We already contacted you from support@musclebooster.fitness to address your concerns. - Adam, MuscleBooster

What’s new

Squished a few bugs along the way to make Muscle Booster an even smoother workout experience for you. Thanks for being a part of our journey! And don’t forget, if you’re enjoying the app, a quick rating means the world to us and we read each one with gratitude.