5 Best AI Fitness Apps in 2025: AI and Machine Learning

EvolveAI combines artificial intelligence, industry-leading coaches, world-class athletes, and cutting-edge research to make a standalone digital personal trainer and nutritionist.

EvolveAI doesn't just use machine learning to build better workouts, it also ensures you're eating right with recommendations based on your goals, dietary preferences, and health status.

Consistency is a massive part of any successful fitness plan and with EvolveAI's daily workouts and check-ins, your chances of hitting your goals are much better.

The training algorithm ensures you're doing the right exercises and features videos and coaching cues to help with proper form and technique.

EvolveAI also offers some unique features like voice-to-text logging which is super handy, the ability to change the intensity and difficulty of workouts, and an inbuilt stress index feature.

With all these features combined into one package, EvolveAI is the best AI fitness app I've seen on the market in a while.

Key Features

• AI-Powered Personalization: EvolveAI combines artificial intelligence, professional coaches, world-class athletes, and the latest research to build custom workouts and nutrition plans tailored to your goals.
• Daily Workout and Check-ins: EvolveAI provides daily workout schedules and check-ins to help maintain motivation and enhance progress tracking.
• Unique User Interface: EvolveAI integrates features such as voice-to-text logging, adjustable workout intensity, and an inbuilt stress index feature, making it a user-friendly and customizable fitness experience.
• Form Guidance: The training algorithm ensures proper exercise form with videos and coaching cues.
• Nutrition Guidance: AI-powered nutritional recommendations based on your goals, preferences, and health status.

Pricing

Benefits

• Personalized Fitness Plan: EvolveAI's use of AI allows for a fully personalized fitness plan that caters to your specific goals.
• Guidance and Support: The integration of coaching cues, instructional videos, and check-ins provides continuous guidance and support.
• Convenience and Flexibility: With unique features such as voice-to-text logging and adjustable workout difficulty, EvolveAI provides a convenient and flexible tool for fitness enthusiasts of all levels.
• Comprehensive Approach: Combines both workout planning and nutritional guidance in one platform.

Drawbacks

• EvolveAI requires a gym membership or home gym as it uses weights.
• The full feature set is only available on higher-tier plans.

WHOOP is a wearable device that comes with a powerful AI powered app that can tell you everything from how well you slept to your blood oxygen levels.

It also has a built in strength trainer with hundreds of custom workouts to choose from.

As the WHOOP app learns your routines and strength levels, it will provide you with valuable information on how you're progressing in the gym.

Not only that, the WHOOP wearable can help advise when it's time to take a day of or get some extra sleep.

WHOOP uses biometric sensors to measure 5 key metrics and give you a detailed health overview you can use alongside your customized workouts.

Overall, WHOOP is a powerful AI fitness app that leverages real data readings from your body to give you detailed insights into your health and fitness levels. It's a must have for any trainer looking to dial in their fitness goals.

Key Features

• Real Time Machine Learning: The WHOOP app gets smarter as you wear it using AI and machine learning algorithms combined with biometric readings.
• Custom Workouts: Choose from a massive selection of custom workouts from world class trainers such as Mike Thurston, Jesse James, Mike Watson, and more.
• Fitness Recommendations: The WHOOP app gives customized recommendations for optimal sleep, recovery, strain, and more.
• Biometric Monitoring: Tracks respiratory rate, blood oxygen, resting heart rate, heart rate variability, and skin temperature.
• Strength Trainer: Built-in AI strength training feature that adapts as you progress.

Pricing

Benefits

• Real Time Insights: The main benefit of the WHOOP app is the real time AI-powered health and fitness insights it offers.
• Better Sleep: Optimize your sleep with the WHOOP journal and AI recommendations. It also features a haptic alarm which goes off when you've hit a certain level of recovery.
• Data-Driven Training: Makes training decisions based on actual biometric data from your body.
• Recovery Focus: Unique emphasis on recovery and strain balance for optimal performance.

Drawbacks

• The WHOOP app doesn't make fully customized AI workouts yet.
• Some people find a subscription model strange for a physical product (the band).
• Requires wearing the physical device at all times for optimal tracking.

Fitbod sets the standard for AI-powered fitness apps and has all the features needed to rival even the best human personal trainer.

Fitbod delivers personalized training programs and workout plans by leveraging AI and machine learning to create a profile based on your goals, fitness levels, and available exercise equipment.

As you build your user profile on Fitbod, the app is better able to recommend exercises based on your capability and muscle fatigue from previous workouts.

If you're new to training Fitbod can help you to use the correct form and prevent injury by offering high-quality video exercise instructions.

Fitbod ensures you progress as fast as possible by actively tracking your progress and suggesting the optimal weights and rep ranges, as well as suggesting workouts based on your muscle fatigue levels from previous sessions.

Fitbod ticks all the boxes for anyone looking for a high-quality AI-powered fitness app and has earned Fitbod third place as the best AI fitness app.

Key Features

• Personalized Training Programs: Fitbod leverages AI and machine learning to deliver customized training programs and workout plans based on individual goals, fitness levels, and available exercise equipment.
• Progress Tracking: Fitbod actively tracks your progress, suggesting the optimal weights and rep ranges. It also recommends workouts based on your muscle fatigue levels from previous sessions.
• Wearable Compatibility: Fitbod integrates with Fitbit, Apple Health, Strava, and other wearables to provide a comprehensive approach to health and fitness tracking.
• Extensive Exercise Library: Fitbod features an extensive library of exercises and high-quality video instructions, providing users with a vast range of options and guidance for maintaining the correct form and preventing injury.
• Muscle Fatigue Algorithm: Unique approach to workout planning based on muscle recovery status.

Pricing

Benefits

• Personalized Experience: Fitbod offers a personalized fitness experience by suggesting workouts and exercises based on individual capabilities and previous workout data.
• Injury Prevention: For those new to training, Fitbod provides high-quality video exercise instructions to ensure the correct form and prevent injury.
• Unique Insights: Fitbod gives you unique insights into your muscle fatigue levels and helps maintain motivation.
• Equipment Flexibility: Adapts workouts based on available equipment, whether at home or in a gym.

Drawbacks

• The AI can take a week or two to train before you see the best results.
• Limited nutrition guidance compared to some competitors.
• Some users report occasional syncing issues with wearables.

FitnessAI helps you optimize your fitness routine by leveraging artificial intelligence and machine learning to create personalized workout plans based on your goals, current fitness level, and workout history.

FitnessAI provides guidance on what exercises to do, how much weight to lift, and how many sets and reps to do, allowing you to benefit from structured progressive overload (the thing that builds muscle).

FitnessAI boasts a number of unique features that mark it as one of the best AI fitness apps available since its release in 2019.

3D Animations are used to show the user how to correctly do the exercise, as well as which muscles are being worked, very handy for beginners.

FitnessAI's machine learning algorithm continuously optimizes your workout plans and generates the most effective exercises, sets, reps, and weights for each individual. This makes Fitness AI a top contender as one of the best AI fitness apps available.

Key Features

• Personalized Workouts: FitnessAI leverages artificial intelligence and machine learning to create workout plans that are tailor-made to an individual's current fitness level, workout history, and personal goals.
• Interactive GUI: The app's user interface is designed to be simple and user-friendly, making the process of logging workouts an enjoyable and effortless experience.
• 3D Animation Guides: FitnessAI uses 3D animations to demonstrate correct exercise techniques and highlights the muscles being worked, a super beneficial feature for beginners.
• Progressive Overload: Automatically calculates optimal weight, sets and reps for progressive strength gains.
• Workout Optimization: Machine learning algorithm that continuously refines your workout plan based on performance.

Pricing

Benefits

• Structured Progression: FitnessAI helps ensure consistent progress in fitness training through structured progressive overload, which is key to muscle development.
• Personalized Guidance: By tailoring exercises, weight loads, and rep and set numbers to an individual, the app delivers a unique workout plan to meet specific fitness goals and maximize results.
• User Experience: The app's simple, intuitive interface enhances the user experience, making it easy to log workouts, track progress, and stay motivated.
• Visual Learning: 3D animations help users learn proper form and understand muscle targeting.

Drawbacks

• Only available on iOS devices.
• No monthly billing option available, only annual subscription.
• Limited nutritional guidance compared to some competitors.

Freeletics is a popular fitness app with over 54 million users that offers personalized workouts and nutrition plans helping them achieve their fitness goals.

Workouts can be customized based on individual fitness levels, equipment availability, and time constraints, making it a highly versatile AI fitness app.

Freeletics allows the user to work with their very own digital coach ensuring targeted and tailored workouts are created from 350+ exercises available.

The AI coach works in conjunction with a team of sports scientists to ensure the quality of each workout. Workouts allow for no equipment workouts, gym workouts, or cardio and stretching activities like sprints and Yoga.

Freeletics is packed with features that have maintained it as the most popular AI workout app in Europe.

Key Features

• Personalization: Freeletics provides personalized workout and nutrition plans, allowing users to tailor their fitness regimen according to their individual needs and constraints.
• AI Coaching: Freeletics is equipped with a digital AI coach that creates targeted workouts from over 350+ exercises.
• Training and Nutrition Bundle: Freeletics offers an extensive bundle that not only includes workout plans but also incorporates nutrition. This bundle includes recipes, personalized meal plans, access to nutrition coaches, and 100+ audio sessions discussing various aspects of health, nutrition, mindset, and training.
• Workout Versatility: Includes no-equipment options, gym workouts, cardio activities, and yoga.
• Community Support: Large user base provides motivation and social elements.

Pricing

Benefits

• Versatility: Thanks to its capability to adjust based on personal fitness levels, equipment availability, and time constraints, Freeletics caters to a broad range of users.
• Precision: The AI-driven coaching system of Freeletics ensures that workouts are not only targeted but also optimized for the individual's unique needs.
• Holistic Approach: With the inclusion of nutrition and mindset coaching in its bundle, Freeletics offers a holistic approach to fitness and wellbeing.
• Flexibility: Perfect for those who train in various environments or travel frequently.

Drawbacks

• Workouts are considered too intense for some users.
• Higher price point compared to some competitors.
• Some users report the interface can be less intuitive than other apps.