Underdog - Effort decides

Turn your HR zones into points

Only for iPhone

Free

iPhone

Underdog turns your heart rate zones into points and lets you compete in leagues with friends

Ratings & Reviews

  • This app has not received enough ratings or reviews to display an overview.

- Widget for quick league stats - Privacy settings for public profile data - Controls to view 7-day, 30-day, and 6-month data in select charts - New charts (steps, resting heart rate, and more) - Respiratory rate widget

Version 1.3

The developer, Ignas Velza, 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 based, for example, 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

    Provider
    • Ignas Velza
    Size
    • 8.5 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Ignas Velza
  • Privacy Policy

    • More by Ignas Velza