Muscle Mastery vs Chalk Performance Training
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Muscle Mastery
This app helps users achieve their health and fitness goals with personalized workout and nutrition plans. It offers direct access to certified coaches for support and accountability, along with tools to track progress and daily habits.
- Personalized training plans with video instruction
- Workout and progress tracking
- Nutrition and macro tracking
- Direct in-app messaging with coaches
- Habit tracking and accountability
- Integration with wearable devices
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Your program lives here. This is where the work happens. 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.
Chalk Performance Training
Access science-based workouts for any fitness level, at home or in the gym. Track your progress, join a supportive global community, and receive expert guidance to achieve your health and fitness goals.
- At-home and gym workout programs
- Beginner, intermediate, and advanced options
- Exclusive workout library
- Video demonstrations and instructions
- Progress tracking and performance analysis
- Global fitness community and discussions
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The Chalk Performance Training App is the #1 Transformation App with the most effective, science-based workouts for anyone, anywhere and anytime. Chalk Performance Training is more than just a fitness app. It is a global family that works hard, trains together and inspires each other to reach new heights through health and fitness. WORKOUTS: ⁃ Train anywhere, anytime with access to both at home AND gym workout programs. ⁃ Find a workout to suits your needs, with beginner, intermediate or advanced workout options. ⁃ Access our exclusive Chalk Workout Library, with aesthetic, strength, endurance building, and minimal equipment program options. ⁃ Have a new, fresh and exciting workout for every day at your fingertips, ensuring you never get bored and stay motivated to achieve your fitness goals. ⁃ Set up a workout schedule that easily suits your preferences and your life. ⁃ All workouts include clear instructions, video demonstrations and exercise descriptions for proper form and technique to get the best results. PROGRESS TRACKING, SUPPORT & ACCOUNTABILITY: ⁃ Exclusive Chalk Performance Training video content. ⁃ Set goals and track your progress seamlessly within the app to ensure you are moving in the right direction. ⁃ Record your workout stats and analyze your performance over time. ⁃ Information, tips and tricks to educate you on your journey! COMMUNITY: ⁃ Join the Exclusive Chalk Performance Training Community that is a worldwide fitness family. ⁃ Get motivated by seeing what other users are achieving and share your journey and accomplishments too! ⁃ Participate in group discussions, ask questions, and get advice from experienced trainers and Chalk Coaches. ⁃ Discover inspiring success stories, fitness tips, and valuable insights from industry experts. We are on a mission to transform bodies, hearts and lives through health and fitness. If you have a goal, it is our mission to help you achieve it. We’d love to welcome you to our worldwide Chalk Performance Training Family!
Screenshots
Verdict
The clearest difference is rating: Muscle Mastery at 5.0 against Chalk Performance Training's 3.8. Muscle Mastery also leads on review sentiment (100% vs 65%) and update cadence (every 2 months vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Muscle Mastery holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 95 and 165 respectively. Written reviews point the same way: 100% of Muscle Mastery's written reviews are positive against 65% of Chalk Performance Training's.
Muscle Mastery ships an update every 2 months, Chalk Performance Training every 5 months. The most recent releases landed on October 6, 2026 and October 23, 2026 respectively.
| Parameter | Muscle Mastery | Chalk Performance Training |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (95 ratings) — better | 3.8 (165 ratings) |
| Positive reviews | 100.0% of reviews — better | 65.5% of reviews |
| Number of ratings | 95 | 165 — better |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 159 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | L8R Lifestyle, LLC | Chalk Performance Training |
Customer experience
Muscle Mastery
Chalk Performance Training
Bugs and requests
Muscle Mastery
Not enough reviews yet to summarise bugs or requests.
Chalk Performance Training
Reported bugs
4 issues- Timer resets when switching apps
- Inability to log completed sets
- Workout history not transferring from previous app
- Difficulty creating custom workouts
Requested features
5 requests- Add option to disable audio during workouts
- Improve ability to enter weights and reps manually
- Provide more customization options for workouts
- Implement seamless sync across devices
- Add support for Apple Watch integration
In-app purchases
Muscle Mastery
No in-app purchases
Chalk Performance Training
No in-app purchases
Questions
Is Muscle Mastery free?
Is Chalk Performance Training free?
Which has better reviews, Muscle Mastery or Chalk Performance Training?
Do Muscle Mastery or Chalk Performance Training have ads?
Which is updated more often, Muscle Mastery or Chalk Performance Training?
Other comparisons
