Muscle Booster Workout Planner

In-app purchases
4.2
243K reviews
10M+
Downloads
Content rating
PEGI 3
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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, helping you improve your physical fitness whether you prefer working out at home or at the gym.

From muscle-building gym routines to calisthenics and weight loss programs, Muscle Booster creates a personalized workout plan based on your goals and personal data. Train at home or hit the gym! Our smart training algorithm guides you through sets, rep ranges, and rest intervals to help you reach your goals faster.

WHY WORK OUT WITH MUSCLE BOOSTER?
Access a library of 1,000+ workouts tailored to both men and women for muscle gain, fat loss, recovery, and more. Perfect for home or gym training.
Use the Workout Player for audio tips, instructions, muscle group breakdowns, and a built-in workout/rest timer (compatible with Apple Watch).
Join challenges tailored to your profile—from Morning Routines, Calisthenics, Fat-Burning and Chair Workouts to Dumbbells, 6-Pack Training, and Injury Recovery.
Create custom plans tailored to the equipment you have available, including free weights, machines, bands, or bodyweight stations.
Each plan includes estimated completion time and calories burned.
After each session, the workout tracker highlights which muscles to train next and which ones need time to recover.
Stay motivated with Mini Milestones, helping you track progress and feel the positive effects of training.

HOW DOES THE WORKOUT PLANNER WORK?
Set your fitness goals: weight loss, muscle gain, strength, flexibility, or recovery.
Choose your target zones: arms, core, abs, chest, stomach, legs, shoulders, or full-body.
Enter your personal data: age, gender, height, weight, and fitness level.
Choose your workout location: gym or home.
Select preferred training days and times.
Pick available equipment or opt for calisthenics.
Enter health or training restrictions, such as injuries or cardiovascular conditions.
Add custom reminders so you never miss a workout.
Take an AI fitness test to assess your current level.
Receive a fully personalized workout plan.

Muscle Booster is your ultimate companion for both home and gym workouts. Ready to take on the challenge? Start strength training, lose weight, build muscle, and transform your life with your own customized gym workout planner.

Download Muscle Booster 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 enjoy the full experience, a subscription is required.

Additional in-app purchases may be offered (e.g., fitness guides, VIP customer support) for a one-time or recurring fee. These purchases are entirely optional, and your subscription is not dependent on them. All offers will be clearly displayed 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
Sep 18, 2025

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

4.2
240K reviews
diamond zieman
June 29, 2025
I like that you can choose which muscles to target. I think when the free features of the app you can only create a workout and then you can't even use the workout you created. Other than the targeting muscle feature, it's like every other app. I can't say I like anything about the app when it's so limited.
4 people found this review helpful
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WELLTECH APPS LIMITED
July 1, 2025
Hi, there - thanks for sharing your thoughts! You can find your workout plan in the 'Plan' tab of the app. Each day, it includes both your main workout, as well as additional activities. You’re free to complete them at different times, if that works better for you. Please reach out to me at adam.support@muscle-booster.io. – Adam, MuscleBooster
Chris
December 12, 2024
To the contrary, I had no bugs before this update and now your app has lots of bugs. It just freezes mid exercise. The app is becoming a boat anchor. Please change it back. It was the best app I had found and I don't want to lose it. You'll get more stars when you fix the bugs.
21 people found this review helpful
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WELLTECH APPS LIMITED
December 13, 2024
Hi, Topher! Thank you for sharing your feedback. We're really sorry to hear that the app is freezing during your workouts. We appreciate your loyalty and want to help make your experience better. If you have more details about the issues, please reach out to support at adam.support@muscle-booster.io. – MuscleBooster Team
Becca Gurba
November 24, 2024
The workouts are okay. Asling as they show up on your screen. For the last 2 days my daily workout hasn't shown up at all and it's only been the morning challenge thing. If I slide to the next day I can see it but than when the next day comes it's gone again. And the steps don't track correctly. It stops tracking at random parts of the day. I'll be walking around my neighborhood or the grocery store and still be at the same amount of steps I was before I started.
39 people found this review helpful
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WELLTECH APPS LIMITED
November 25, 2024
Hi! I’m really sorry to hear about your experience. We've reached out to you via email from support@muscle-booster.io address your concerns. If you haven’t received our email or need further assistance, please let us know. Thank you for your patience and understanding. – MuscleBooster Team

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.