1. Home
  2. Topics
  3. Free Muscle Building App

Best Free Muscle Building App

250+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated October 2026

Looking for free free muscle building app? 20 of our 250+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Free Muscle Building App (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Muscle Booster Workout TrackerMuscle Booster Workout TrackerFree4.5★ (139K)NoYesNov 2026
2Fitness App: Gym Workout PlanFitness App: Gym Workout PlanFree4.7★ (37K)NoYesNov 2026
3Fitbod: Gym & Fitness PlannerFitbod: Gym & Fitness PlannerFree4.8★ (289K)NoYesNov 2026
4Fitness & Bodybuilding ProFitness & Bodybuilding ProFree4.7★ (6.4K)YesYesNov 2026
5Fitness AI Gym Workout PlannerFitness AI Gym Workout PlannerFree4.7★ (56K)YesYesNov 2026
6LADDER Strength Training PlansLADDER Strength Training PlansFree5.0★ (218K)YesYesNov 2026
7Home Workout - No EquipmentsHome Workout - No EquipmentsFree4.9★ (129K)YesYesNov 2026
8Strongest: Free Workout AppStrongest: Free Workout AppFree5.0★ (1)NoNoSep 2026

Top Picks for Free Muscle Building App

Muscle Booster Workout Tracker#1

Muscle Booster Workout Tracker by WELLTECH APPS LIMITED

Gym calisthenics & weight loss
Editor's Choice
💪 Health & Fitness
4.5😐(139K ratings)
FreeIn-App Purchases
#62in Health & Fitness
Muscle Booster Workout Tracker screenshot 1
Muscle Booster Workout Tracker screenshot 2
Muscle Booster Workout Tracker screenshot 3
Muscle Booster Workout Tracker screenshot 4
Muscle Booster Workout Tracker screenshot 5
Muscle Booster Workout Tracker screenshot 6

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
Fitness App: Gym Workout Plan#2

Fitness App: Gym Workout Plan by FITNESS ONLINE MChJ

Exercise tracker, home routine
Strong Contender
💪 Health & Fitness
4.7😊(37K ratings)
FreeIn-App Purchases
Fitness App: Gym Workout Plan screenshot 1
Fitness App: Gym Workout Plan screenshot 2
Fitness App: Gym Workout Plan screenshot 3
Fitness App: Gym Workout Plan screenshot 4
Fitness App: Gym Workout Plan screenshot 5
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#3

Fitbod: Gym & Fitness Planner by Fitbod Inc.

AI Personal Trainer & Workouts
Worth Considering
💪 Health & Fitness
4.8😊(289K ratings)
FreeIn-App Purchases
#20in Health & Fitness
Fitbod: Gym & Fitness Planner screenshot 1
Fitbod: Gym & Fitness Planner screenshot 2
Fitbod: Gym & Fitness Planner screenshot 3
Fitbod: Gym & Fitness Planner screenshot 4
Fitbod: Gym & Fitness Planner screenshot 5
Fitbod: Gym & Fitness Planner screenshot 6

This AI-powered fitness app creates personalized workout plans to help you build muscle, increase strength, and lose weight. It adapts to your fitness level and available equipment, offering over 1000 exercises with video guides. Track your progress and integrate with popular health platforms.

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)

More Free Muscle Building App apps to explore

FAQ about Free Muscle Building App

What is the best free muscle building app for iPhone?
Muscle Booster Workout Tracker tops our free muscle building app ranking as of October 2026, with a 4.5-star average from 139K App Store ratings, and it's free to download.
Muscle Booster Workout Tracker has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ free muscle building app on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.