Muscle Booster Workout Planner

In-app purchases
4.3
244K reviews
10M+
Downloads
Content rating
USK: All ages
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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
23 Oct 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

4.3
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.
6 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
C. C.
29 July 2024
Not worth the 120€ per year they require. I paid the subscription in the beginning (because they kind of force you to pay in order to try the App), but cancelled as soon as I saw all the flaws this App has... the worse of all is that you can lose the progress (‼️) of a current workout if for whatever reason the App is closed to do something else (like answer a long call). Its not a bad App per se if it was cheaper, but it's definitely not worth the 120€ per year they want.
14 people found this review helpful
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WELLTECH APPS LIMITED
2 September 2024
Hi! We're sorry to hear about your experience. We understand how vital it is for you to have control over your subscriptions. Please don't hesitate to reach out to us at support@muscle-booster.io, with the subject “Store Feedback,” where our dedicated support staff is on standby to assist you. MuscleBooster Team
Andrej Balaz
16 November 2024
Series of technical issues make it impossible to use. The app, after being off-screen for just a minute, immediately loses all progress. It's impossible to write a feedback message because the app repeatedly crashes when trying to upload the mandatory screenshot. It's unusable. I requested an immediate refund, but it's impossible from the app. Android 15. Google Pixel phone.
3 people found this review helpful
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WELLTECH APPS LIMITED
18 November 2024
Hi, Thanks for your feedback – we're sorry to hear you're having trouble opening the app. Your experience is important to us, and we'd like to get to the bottom of this. Please email us at adam.support@muscle-booster.io we can help further. – 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.