Best apps like Flex - Gym Workout Tracker

63+ similar apps compared and reviewed

4.8 avg rating
10 free apps
Updated July 2026

Looking for something like Flex? We've analyzed 63+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

simply. nutrition tips

simply. nutrition tips by simply advisory LLC

that help you get healthy.
💪 Health & Fitness
5.0(17 ratings)
FreeIn-App Purchases
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simply. nutrition tips screenshot 6

Get daily nutrition tips from certified nutritionists with a subscription to this app, and start your journey to a healthier lifestyle. With features like customizable notifications, saved tips, and a tip tracker, you can easily incorporate healthy habits into your daily life.

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Top Alternatives to Flex

Stronger - Gym Workout Planner#1

Stronger - Gym Workout Planner by Atlas Smart Technologies LTD

Weight Lifting & Exercise Log
Editor's Choice
💪 Health & Fitness
4.8😊(17K ratings)
FreeIn-App Purchases
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This app helps serious lifters plan and track their workouts with AI coaching and community features. Log sets, reps, and weights, and monitor progress with powerful analytics to achieve your fitness goals.

What We Love

  • 🚀 Easy to use
  • 👍 Motivating and engaging
  • 🚀 Intuitive interface
  • 🚀 Helpful for tracking progress

Room to Improve

  • 🐛 Occasional glitches and bugs
  • 🔒 Paywall for key features
  • 🔒 Overly aggressive subscription model
Gym Workout Planner - Gym Plan#2

Gym Workout Planner - Gym Plan by Gym Plan Limited

Weight Lifting Muscle Tracker
Strong Contender
💪 Health & Fitness
4.7😊(673 ratings)
FreeIn-App Purchases
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This app helps you plan and track your gym workouts for faster progress. Choose from a variety of workout plans or customize your own, track sets, reps, and weights, and monitor your personal bests to stay motivated.

What We Love

  • 💪 Excellent workouts
  • 🎥 Clear exercise videos
  • 🔍 Customizable plans
  • 🧠 Knowledgeable coaches

Room to Improve

  • 🕰️ Inaccurate workout timers
  • 🔀 Difficulty modifying pre-made plans
  • 🚫 Lack of Apple Watch integration
Muscle Booster Workout Tracker#3

Muscle Booster Workout Tracker by WELLTECH APPS LIMITED

Calisthenics, Chair, Gym Plans
Worth Considering
💪 Health & Fitness
4.5😐(135K ratings)
FreeAdsIn-App Purchases
#58in 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

Room to Improve

  • 🐛 Buggy app performance
  • 🔒 Lack of free trial
  • 💰 Expensive subscription

More apps like Flex

4
Strong Workout Tracker Gym Log
Strong Workout Tracker Gym Log
Strong Workout Tracker Gym Log
Strength Training Planner
Free

This app helps you track your workouts and progress with an intuitive interface. It offers a wide range of exercises, detailed instructions, and advanced statistics to help you achieve your fitness goals. Easily log your routines, monitor personal records, and stay motivated on your fitness journey.

Intuitive workout loggingComprehensive exercise libraryApple Watch integration
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근성장과 근력 향상을 위해 트레이닝을 기록해보세요
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This app guides you through a proven barbell strength training program with no guesswork. It plans every exercise, set, and weight for you, allowing you to focus on lifting and see consistent progress. Ideal for beginners or those returning to strength training.

Proven 3x/week strength programAutomated progressionGuided workouts with timers
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RepCount - Gym Workout Tracker
RepCount - Gym Workout Tracker
RepCount - Gym Workout Tracker
Weight Lifting & Exercise Log
Free

This app helps you track and analyze your strength training workouts. Log unlimited exercises and programs for free, with an optional premium subscription for advanced features like supersets and detailed progress charts.

Workout loggingExercise creationWorkout program creation
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Gravitus - Gym Planner and Log
Gravitus - Gym Planner and Log
Gravitus - Gym Planner and Log
Weight Lifting Tracker Journal
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This app helps you track and plan your weightlifting routines. It offers an extensive exercise database, community features, and detailed analytics to monitor your progress and maximize gains. Enjoy an ad-free experience with advanced tools for serious lifters.

Advanced workout routinesExtensive exercise database with video demosCommunity features for sharing and following
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Gains: Weightlifting Tracker
Gains: Weightlifting Tracker
Gains: Weightlifting Tracker
Gym Workout Log & Planner
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This app helps you plan, log, and analyze your weight training workouts. It provides features like rest timers, automatic personal record tracking, and offline functionality to make every gym session more efficient and insightful.

Plan and log workouts easilyView last sets and weightsCustomizable rest timer with Live Activities
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Fitbod: Gym & Fitness Planner
Fitbod: Gym & Fitness Planner
Fitbod: Gym & Fitness Planner
AI Personal Trainer & Workouts
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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.

AI-generated customized workout plansAdaptive AI learns from user editsOver 1000 exercises with video guides
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HeavySet - Gym Workout Log
HeavySet - Gym Workout Log
HeavySet - Gym Workout Log
Strength Training Tracker
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This app is a powerful yet simple workout tracker designed for weightlifting, bodybuilding, and strength training. It allows users to log workouts efficiently, track progress with detailed charts, and manage routines with features like supersets and rest timers.

Workout logging with intelligent suggestionsProgress charts for volume, 1RM, reps, and weightCustomizable routines with supersets and rest timers
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