Heat Ready

Heat acclimatization tracker

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

Prepare your body for competition in the heat. Science-based heat acclimatization with your Apple Watch — now with a 7-day free trial. HeatReady helps athletes prepare for training and competition in hot environments by tracking heat acclimatization with science-based methods. Using heart rate from your Apple Watch, HeatReady estimates your physiological strain during heat training and guides you through a structured acclimatization plan. KEY FEATURES Heat strain monitoring Live monitoring of your physiological strain during heat training sessions, with an estimated core temperature derived from heart rate using a Kalman-filter model. 14-day acclimatization protocol A structured day-by-day heat acclimatization plan tailored to your profile, so you know exactly what to do each day. Acclimatization status Track how acclimatized you are with clear, evidence-based indicators, and see when your adaptation begins to fade. Decay tracking Heat adaptation fades when you stop training in the heat. HeatReady estimates this decay so you can time your final preparation before competition. Session history Review every heat session with detailed trends and metrics. Apple Watch companion Start and monitor heat sessions directly from your wrist. DESIGNED FOR ATHLETES Whether you compete in track and field, endurance running, cycling, or team sports, HeatReady helps you arrive at the start line prepared for the heat. HEATREADY PRO HeatReady is free to download. The 14-day protocol, live monitoring, Apple Watch session tracking, decay analytics, and session history require a HeatReady Pro subscription (monthly or yearly), with a 7-day free trial on the yearly plan. Payment is charged to your Apple Account. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://athlivia26.com/privacy.html IMPORTANT HeatReady provides estimates for training guidance only. It is not a medical device and does not measure core body temperature directly. It does not diagnose, prevent, or treat any illness, including heat-related illness. Always listen to your body, follow qualified guidance, and stop activity if you feel unwell. All your data stays on your device.

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- HeatReady Pro: the app is now free to download, with a 7-day free trial on the yearly plan - New languages: German, French, Spanish, and Italian - Early supporters who purchased HeatReady keep full access - thank you

Version 1.1

The developer, LLC. ATHLIVIA, 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.

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    Accessibility

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

    Information

    Seller
    LLC. ATHLIVIA
    Size
    6.1 MB
    Category
    Sports
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    English and 5 more
    • English, French, German, Italian, Japanese, Spanish
    Age Rating
    9+
    In-App Purchases
    Yes
    Copyright
    © 2026 ATHLIVIA LLC
  • Privacy Policy

    • More by LLC. ATHLIVIA

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