Strength Training by M&M

In-app purchases
4.8
19.7K reviews
1M+
Downloads
Content rating
Everyone
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About this app

Understand every exercise from the inside out

Strength Training by Muscle & Motion is powered by a team of physiotherapists, movement experts, and professional animators. We turn your device into a visual strength-training lab and show you exactly which muscle structures are working, so you can understand the anatomy and biomechanics of the exercise, and train smarter while reducing injury risk.

Made for personal trainers, strength coaches, therapists, students, and dedicated lifters, this app connects what you feel in the gym with what’s really happening in the body.

Designed for visual learners
If you learn best by seeing, this app is made for you.

Why trainers, coaches & students love it

- Makes complex anatomy easy to understand through clear 3D animations

- Shows exactly which muscles and joints are involved in each exercise

- Reveals common mistakes so you can coach better form

- Explains concepts far better than static images or textbooks

Backed by thousands of 5-star ratings and trusted by movement professionals worldwide.

Instead of static diagrams, you get animated 3D views of real lifts: muscles slide, shorten and lengthen as the movement happens, making it much easier to remember which structures are doing what, and why it matters

Key features:
• Interactive 3D Anatomy Model
Rotate, zoom, and explore every muscle, joint, and bone for a deeper understanding of human movement.

• Access to 3D Exercise Anatomy Library (1,200+ exercises, updated weekly)
Comprehensive library of science-based exercise videos, each with full anatomical analysis and common mistakes to avoid. See prime movers, synergists, stabilizers and antagonists highlighted with clear color-coding, and learn how to target or de-emphasize specific muscles by changing stance, range, or grip.

• Educational Videos
Discover a range of videos designed to make learning anatomy easy and engaging. From core fundamentals to advanced mechanics.

• Workout Plans
Create & assign customized workouts


What our users say:
“An absolute must for understanding movement and the anatomy behind it! It’s like watching under the skin.”

“I’ve finally found an app that helps me prevent injuries by showing exactly what not to do!”

“This app makes complex anatomy simple and has helped me become a more effective trainer for my clients.”

Who is this app for?
Strength Training by M&M is built for anyone who wants to train and teach with confidence:

- Personal trainers & strength coaches
- Physical therapists, chiropractors & rehab professionals
- Pilates, yoga & movement teachers
- Bodybuilders, powerlifters & fitness enthusiasts
- Kinesiology, physiotherapy & sports-science students
- University and college instructors who teach exercise anatomy/biomechanics

Use it to prepare sessions, design programs, teach classes, or deepen your own understanding of lifting mechanics.

Free access & subscriptions
You can download the app and start learning with a free tier that unlocks a portion of the content so you can explore the 3D model and try sample exercises.

To access the full library of exercises, 3D anatomy content, and all workout-building tools, you can upgrade with an in-app subscription:
Subscriptions give you full access to all videos, exercises, workouts, and the 3D model for the duration of your plan.

Subscriptions auto-renew unless you turn off auto-renew at least 24 hours before the end of the current period in your Apple ID account settings.

You can manage or cancel your subscription at any time in Settings > Apple ID > Subscriptions on your device.

For full details, please see:
Privacy Policy: https://www.muscleandmotion.com/privacy/
Terms of Use: https://www.muscleandmotion.com/terms-of-use/

Support
Have a question, feature request or need help with your subscription?
Our team is happy to help at info@muscleandmotion.com.
Updated on
Mar 1, 2026

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
Personal info, App activity and 2 others
This app may collect these data types
Personal info, App activity and 2 others
Data isn’t encrypted
You can request that data be deleted

Ratings and reviews

4.8
19.1K reviews
Darian Williams
December 7, 2024
I've used this app for a little over a year, and the recent update took the app down a few notches. I miss having the muscular diagram to choose exercises. Plus, the app itself is buggy now, unlike before. Even though I have a membership, for some reason, I'm unable to add additional clients. And last week, I was denied access to other membership-exclusive exercises despite having a membership. I think that the app can be excellent again but he developers need to go back through and clean up
16 people found this review helpful
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Muscle & Motion
February 8, 2025
Thank you for your loyalty and for sharing your feedback. We're sorry to hear about the recent issues and truly appreciate your patience. Our team uploaded a new version, including fixing bugs and optimizing features. Please try reinstalling the app. Your support means a lot! 🚀
A Google user
November 23, 2019
I'm a personal trainer, and retired biology teacher so I not only want to keep learning, but want my clients ("students") to learn, too. I can show my clients exactly what we're trying to achieve using smart phone or tablet. If they can visualize it, it's easier for both of us. Excellent graphics, app identifies synergistic and stabilizing muscle groups, and theory. Wish it was more functional on my PC/Mac. I typically stay on longer, investigating other routines. Thanks for an amazing app!
75 people found this review helpful
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A Google user
January 21, 2020
In the beginning, I was ecstatic with the app. Loved all the exercises and the ability to create folders for future reference. U fortunately, the app now continuously crashes, and my folders no longer exist. Will not be renewing subscription, which is a shame. As a trainer, its potential value is amazing. Fix the glitch and I will renew.
62 people found this review helpful
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Muscle & Motion
February 22, 2020
Hi Dawn , can you please update to our latest release, we are sure it will solve all the issues that you mentioned. Please contact us at info@muscleandmotion.com if the issue persists. Thanks.

What’s new

Dear members,

This update includes the following updates:
- Fixed bug in copying M&M plans for subscribers
- Bug fixes

We recommend updating to the latest version for the best experience.

Enjoy,
Strength Training Team, M&M