Vilar: Energy, HRV & Stress

Recovery, Sleep & Readiness

$7.99

Vilar turns Apple Watch HRV, heart rate, sleep and activity into one clear estimate—no setup, no account. Vilar turns the health signals your Apple Watch already records into a clear estimate of your energy right now, from 5 to 100. See how activity, stress response, rest and calm move it through the day. No setup. No sliders. No account. Wear your watch, and Vilar learns your baseline from your own recent HRV and resting heart rate. SLEEP TRACKING OPTIONAL You do not have to sleep with your watch. Your baseline comes from recent HRV and resting heart rate, not from your nights, so a day tracked without any sleep data still gets a reading, a timeline and an hourly breakdown. It simply starts from a rested morning charge instead of one measured from last night. Wear the watch overnight when you want that charge measured — but nothing in Vilar is locked behind it. YOUR DAY AT A GLANCE • Check your latest energy on iPhone or Apple Watch. • Keep it visible on your watch face with a complication. • Follow energy and stress level through the day. • Touch and hold the timeline to inspect any point. • Open any hour to see the activity, stress response, recovery and mindfulness behind its change. HISTORY THAT EXPLAINS • Browse the days saved to your iPhone. • See which hours gained or lost energy and what moved them most. • Weigh recent weeks or months against the period before. • Compare days by time since waking, so early and late mornings still line up. HONEST BY DESIGN Vilar is an estimate, and it presents itself as one. Missing measurements stay visible as dashes or gaps instead of being passed off as observations. When there is not enough information for a reading, Vilar says so. PRIVATE AND PERSONAL Your Apple Watch reads heart rate variability (HRV), heart rate and resting heart rate from Apple Health, along with active energy, steps, workouts, sleep and mindful minutes. It also reads your weight, date of birth and biological sex, used only to scale the estimate to your body and set your maximum heart rate. Your watch calculates the score against your personal baseline. Readings sync only to your paired iPhone, where your history is stored. Vilar has no account and no server. Vilar is a rough estimate, not a medical device. It cannot diagnose, treat or prevent any condition and should not be used to make medical decisions. Apple Watch and Apple Health are required. Regular wear through the day gives the most complete picture; overnight wear is optional.

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The developer, Mikael Hultgren, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Mikael Hultgren
    Size
    • 11.2 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • Apple Watch
      Requires watchOS 26.0 or later.
    Languages
    • English
    Age Rating
    9+
    Copyright
    • © 2026 Artsoftheinsane
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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