Muscle Mastery
Muscle Mastery is made and published by L8R Lifestyle, LLC. AppBrain is an independent app data site and isn't affiliated with L8R Lifestyle, LLC. The app name, icon, screenshots and description belong to L8R Lifestyle, LLC and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 4.96
- 95 ratings
- Last updated
- September 11, 2026
It doesn't have enough ratings yet to judge what users think.
Rankings
App Store top chartsApp Store Rankings for Muscle Mastery
Competitors
Similar apps and more from L8R Lifestyle, LLCAlternatives to Muscle Mastery
Also available on Google Play
Releases
Updates seen on the App Store- Version
- 8.18.7
- Launched
- September 2021
No changelog data
User feedback
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 159.2 MB
- Content rating
- Everyone
Technologies used by Muscle Mastery
About the app and developer
About Muscle Mastery
Muscle Mastery is a health & fitness app developed by L8R Lifestyle, LLC.
What is the rating of Muscle Mastery?
Muscle Mastery is rated 4.96 out of 5 stars, based on 95 ratings.
Is Muscle Mastery free?
Muscle Mastery is free. The app size is 159.24 MB. The latest version available is 8.18.7. The last update was on September 11, 2026.
What are the requirements for Muscle Mastery?
The app has a content rating of Everyone. The app has been available on the App Store since September 2021.
Developer information for L8R Lifestyle, LLC
Address:
Store listing
By L8R Lifestyle, LLC, from the App Store
Description by L8R Lifestyle, LLC Written by the developer, not by AppBrain. Click to read.
Muscle Mastery is a private coaching brand built by Jeff Later, IFBB Pro, with over 24 years of experience and 8,000+ client transformations. The method is built on four phases: Prime, Prove, Power, Polish. A system designed to change your body and what you believe is possible for it.
If you're a Muscle Mastery client, this app is your home base. Your training program, your nutrition plan, your check-ins, and your coach, all in one place. No confusion about where to go or what to do next. Open the app, follow the plan, submit your check-in, and move forward.
-Access your custom training program with video instruction and exercise guidance
-Log your workouts including weight, sets, reps, and personal records
-Submit weekly check-ins directly to your coach with photos, measurements, and notes
-Reference your nutrition plan and track your daily macros
-Message your coach directly through in-app messaging
-Track body weight, measurements, and progress photos over time
-Check daily habits set by you and your coach
-Get push notifications for scheduled sessions and coach updates
-Connects to Apple Watch and Apple HealthKit, Fitbit, and Withings to sync body stats
This app is for Muscle Mastery clients only.