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 Gym Workout Planner acts as a personal trainer alternative, helping you improve your physical fitness whether you're exercising at home or at the gym.

From muscle-building gym routines to calisthenics home workouts and weight loss programmes, Muscle Booster creates a personalised plan based on your goals and physical data. No matter your training location, the app’s smart algorithm guides you through sets, rep ranges, and rest intervals to help you hit your goals and track progress efficiently.

WHY WORK OUT WITH MUSCLE BOOSTER?
Access a library of over 1,000 workouts tailored to both men and women and designed for muscle gain, weight loss, recovery, and more.
Use the Workout Player for audio tips, exercise instructions, information on targeted muscle groups, and a built-in workout/rest timer (Apple Watch compatible).
Join Challenges based on your profile. You’ll find everything from Morning Routines and Calisthenics Home Workouts to Fat Burning, Chair Workouts, Dumbbell Training, 6-Pack Programmes, and Injury Recovery.
Create custom plans that match your available equipment, including free weights, machines, resistance bands, or bodyweight setups.
Each workout includes an estimated duration and the number of calories likely to be burned.
After every session, the app shows which muscles to train next and which require rest, helping you optimise recovery.
Achieve Mini Milestones to stay motivated and experience the full benefits of consistent training.

HOW DOES THE WORKOUT PLANNER WORK?
Set your fitness goals: weight loss, muscle gain, strength, flexibility, or injury recovery
Choose your focus areas: arms, core, abs, pecs, stomach, legs, chest, shoulders, or full-body
Enter your personal data: age, gender, height, weight, and fitness level
Select your workout location: home or gym
Choose your preferred workout days and times
Indicate which equipment you have available
Provide any relevant health or training restrictions (e.g. injuries or cardiovascular conditions)
Set reminders to ensure you never miss a session
Take an AI fitness assessment to gauge your current level
Receive your personalised workout plan

Muscle Booster is your go-to solution for effective home and gym workouts. Take the challenge! Lose weight, build muscle and strength, and transform your life with a fully customised training plan.

Download Muscle Booster today and boost your energy, performance, and overall health with guided workouts built for your body and lifestyle.

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

Additional in-app purchases (e.g. fitness guides or VIP customer support) may be offered for a one-off or recurring fee. These are entirely optional—your subscription does not depend on them. All offers will be clearly presented within 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
18 Sept 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
29 June 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
1 July 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
12 December 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
13 December 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
24 November 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
Did you find this helpful?
WELLTECH APPS LIMITED
25 November 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.