varzo tracks the key indicators that help you understand your body's readiness, exertion, and energy levels throughout each day.
Understand your body's readiness for activity each morning. Your score is calculated from HRV, resting heart rate, and sleep quality to tell you if you should push hard or take it easy.
Dive deep into your sleep quality with stage breakdowns, efficiency metrics, and consistency tracking. Know exactly how restorative your sleep really was.
Track your cardiovascular load throughout the day. See how workouts and daily activities accumulate strain, helping you balance training intensity with recovery needs.
Watch your energy level change throughout the day. Starting from your recovery score, see how activity depletes and rest recharges your body's reserves.
Understanding your body's signals helps you make smarter decisions about training, rest, and daily activities.
Recovery scores help you identify when your body needs rest, reducing injury risk and preventing burnout. Train smarter by knowing when to push and when to recover.
Sleep is when your body repairs and grows stronger. Tracking sleep stages helps you understand what affects your rest and how to improve it for better performance.
Strain tracking shows you exactly how hard your body is working. Balance high-strain days with recovery to maximize fitness gains without risking overtraining.
Body Battery gives you a real-time view of your energy reserves. Plan challenging activities when energy is high, and schedule rest when it's depleted.
Create personalized fitness goals and track your progress with intuitive weekly visualizations. From workouts to hydration, varzo helps you stay on track.
varzo is built with privacy at its core. All your health data is processed entirely on your device. We never see it, store it, or share it.
Get full access to all features with one annual subscription. No hidden fees, no data selling.
Then $9.99/year · Limited time launch pricing
Got questions? We've got answers.
varzo reads heart rate, HRV (heart rate variability), resting heart rate, sleep analysis, respiratory rate, workout data, step count, and active calories from Apple Health. All data processing happens on your device - nothing is sent to external servers.
While varzo works best with an Apple Watch (for continuous heart rate and sleep stage data), you can still use many features with just your iPhone. However, for the most accurate recovery and strain scores, we recommend using an Apple Watch that tracks your health metrics throughout the day and night.
System Requirements: iOS 17 or later. For full sleep stage tracking (REM, Deep, Core), Apple Watch Series 4 or newer with watchOS 9+ is required.
Your Recovery Score is calculated each morning based on several key factors, including HRV (heart rate variability), resting heart rate, sleep quality and duration, and the impact of previous day's strain. These metrics are compared against your personal baseline to give you an accurate picture of your body's readiness. A higher score indicates your body is ready for intense activity, while a lower score suggests focusing on rest.
Yes, absolutely. varzo processes all your health data entirely on your iPhone. We don't have servers that store your health information, and we never transmit your data anywhere. Your health metrics stay on your device under your complete control. You can delete all app data at any time from the Settings menu.
Strain measures your accumulated cardiovascular load throughout the day - it only goes up as you exercise and expend effort. Body Battery is dynamic - it starts at your Recovery Score in the morning and changes throughout the day, depleting during activity and slowly recharging during rest periods. Think of Strain as "how much work you've done" and Body Battery as "how much energy you have left."
Yes, you can cancel your subscription at any time through your Apple ID settings. After cancellation, you'll continue to have access to premium features until the end of your current billing period.
Download varzo today and start making smarter decisions about your training and recovery.
Download on App Store
