Question: Is there a fitness app that tracks heart rate and performance to optimize workouts and provides advanced analysis?

If you're looking for a fitness app that tracks heart rate and performance to help you optimize your workouts, Workout Trainer is a good option. The app offers personalized workouts with certified trainers and uses AI to offer suggestions based on assessments and preferences. It offers detailed heart rate performance analysis, the ability to create custom training plans and a variety of exercises and training programs for different fitness goals. The app is available for iOS and Android devices and offers both free and PRO+ versions.

Another option is WHOOP, which focuses on tracking scientifically useful biometric data points like heart rate, sleep and recovery. The wearable device offers personalized recommendations for daily habits, training and recovery, so you can set goals and track progress with real-time feedback. WHOOP is geared for athletes and those who want to improve sleep and recovery, and it's a data-heavy approach to fitness.

For a more complete approach that incorporates genetic data and other advanced biometrics, check out Alter. The program combines DNA test results with data from wearables to create personalized workout routines, recovery plans and nutrition advice. Alter offers daily workouts, sleep optimization advice and AI-powered form correction and real-time heart rate monitoring, so it's a good all-purpose tool for fitness efficiency.

Last, SmartGym offers personalized workouts based on your available equipment and fitness goals, with real-time suggestions for weight, reps and exercises. It lets you track your progress, including heart rates, calories burned and muscles used, and integrates with Apple Watch for easy use on multiple devices. The app serves as a personal trainer, helping you customize your workouts for better results.