Hi, I'm Zilla. Your fiery friend for a better, longer life. This is your one app for Healthy Habits. Use the app to measure your Heart Rate and HRV, track your Stress & Recovery, and build Healthy Habits like Intermittent Fasting, Breathing Exercise, and Mindfulness Meditation. WHAT USERS ARE SAYING ABOUT US "Superb app for getting more out of my wearables." - eskobaren "This is a great app. It not only allows you to measure HRV (Heart Rate Variability), it also gives you feedback on your s