Best Free Muscle Building App

249+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

Looking for free free muscle building app? 20 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Free Muscle Building App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Fitness App: Gym Workout PlanFitness App: Gym Workout PlanFree4.7★ (36K)NoYesSep 2026
2Fitbod: Gym & Fitness PlannerFitbod: Gym & Fitness PlannerFree4.8★ (283K)NoYesSep 2026
3Muscle Booster Workout TrackerMuscle Booster Workout TrackerFree4.5★ (137K)NoYesSep 2026
4Gymshark Training and FitnessGymshark Training and FitnessFree4.8★ (15K)YesNoSep 2026
5LADDER Strength Training PlansLADDER Strength Training PlansFree5.0★ (190K)YesYesSep 2026
6Gymverse: Gym Workout PlannerGymverse: Gym Workout PlannerFree4.8★ (165K)NoYesSep 2026
7BroScience.appBroScience.appFreeNoNoSep 2026
8Bodybuilding.com - Fitness AppBodybuilding.com - Fitness AppFree4.6★ (29K)NoYesSep 2026

Top Picks for Free Muscle Building App

Fitness App: Gym Workout Plan#1

Fitness App: Gym Workout Plan by FITNESS ONLINE MChJ

Exercise tracker, home routine
Editor's Choice
💪 Health & Fitness
4.7😊(36K ratings)
FreeIn-App Purchases
Fitness App: Gym Workout Plan screenshot 1
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Fitness App: Gym Workout Plan screenshot 6

This app offers comprehensive workout plans and diet guidance for various fitness goals, including weight loss, muscle gain, and toning. It features a vast exercise library with 3D animations, a personal workout diary, and the option to connect with certified personal coaches for tailored online training and nutrition plans.

What We Love

  • 👍 Easy to use
  • 🚀 Convenient workouts
  • 🚀 Clear exercise instructions and videos
  • 🚀 Good integration with Apple Watch
  • 👍 Variety of workout options
  • 👍 Helpful for beginners and experienced users

Room to Improve

  • 🐛 Workout calendar doesn't adjust when workouts are missed
  • 🐛 Disconnect between phone and watch
  • 🔒 Concerns about sexualized content and predatory behavior
  • 🐛 Inability to adjust or customize workouts
  • 🐛 Crashes and bugs
  • 🔒 Limited free usage, requires subscription
Fitbod: Gym & Fitness Planner#2

Fitbod: Gym & Fitness Planner by Fitbod Inc.

AI Personal Trainer & Workouts
Strong Contender
💪 Health & Fitness
4.8😊(283K ratings)
FreeIn-App Purchases
#21in Health & Fitness
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This app creates personalized AI-driven workout plans to help you build muscle, gain strength, and lose weight. It adapts to your fitness level and available equipment, offering over 1000 exercises with video guides. Track your progress and get support from trainers.

What We Love

  • 🚀 Great alternative to expensive personal trainer
  • 👍 Customizable workouts
  • 👍 Variety of exercises
  • 👍 Tracks progress and muscle recovery
  • 👍 Helpful instructions and videos
  • 👍 Affordable compared to a personal trainer

Room to Improve

  • 🐛 Occasional app crashes and sync issues
  • 🔧 Workout recommendations don't always make sense
  • 🔧 Limited ability to customize workouts
  • 🔧 Weights/reps recommendations can be inaccurate
  • 🔧 Lack of personalization options (e.g. changing app theme)
Muscle Booster Workout Tracker#3

Muscle Booster Workout Tracker by WELLTECH APPS LIMITED

Gym calisthenics & weight loss
Worth Considering
💪 Health & Fitness
4.5😐(137K ratings)
FreeIn-App Purchases
#72in Health & Fitness
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This app acts as a personal trainer, creating customized workout plans for muscle gain, weight loss, or recovery. It offers a vast library of exercises and challenges for home or gym, adapting to your available equipment and goals.

What We Love

  • 🚀 Great workouts
  • 👍 Easy to follow
  • 👍 Variety of exercises
  • 🚀 Customizable plans
  • 👍 Helpful for beginners

Room to Improve

  • 🐛 Buggy app performance
  • 🔒 Lack of free trial
  • 💰 Expensive subscription
  • 👎 Limited gym equipment options
  • 👎 Repetitive exercises

More Free Muscle Building App apps to explore

FAQ about Free Muscle Building App

What is the best free muscle building app for iPhone?
Fitness App: Gym Workout Plan tops our free muscle building app ranking as of July 2026, with a 4.7-star average from 36K App Store ratings, and it's free to download.
Fitness App: Gym Workout Plan has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 249+ free muscle building app on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This fitness app provides comprehensive workout plans and diet guidance for various goals such as weight loss, muscle gain, and toning. It includes a large library of exercises with 3D animations, a personal workout diary to track progress, and an encyclopedia for learning about exercises and nutrition. Users can also find and hire personal coaches for online training sessions.
Key features include ready-made workout plans with diet suggestions created by champions, a personal workout diary and tracker, an in-app encyclopedia of over 850 exercises with 3D animations, a diet plan with a calorie counter and food tracker for over 5000 products, and sports nutrition advice. It also offers a personal feed for community interaction and direct messaging with coaches.