
HOTmate
Holdover time calculator
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Free
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About
HOTmate is a lightweight holdover time (HOT) calculator designed for quick use during winter operations. It provides a clean, pilot-friendly workflow: select the aerodrome, enter basic weather and temperature inputs, and get a clear HOT result with the relevant condition and intensity classification.
Key features include:
Fast, simple inputs with an interface optimized for mobile use.
Offline operation — no account, no network required.
Built-in precipitation/intensity logic to help interpret common winter weather scenarios.
Clear, readable results with an emphasis on speed and usability.
Dark mode for comfortable use in low-light environments.
HOTmate is built for rapid cross-checking and situational awareness, with a focus on reliability and a minimal, distraction-free design.
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What's New in HOTmate
2.0
October 26, 2026
• Updated deicing fluid data and holdover time tables for the 2026–2027 winter season. • Added fluid-specific Lowest Operational Use Temperature (LOUT) limit checks. • Improved session timer with accurate time zone handling and UTC/LT display options. • Improved fluid and concentration selection for faster input. • Clearer validation messages and error highlighting. • Smoother keyboard interactions and selection menus. • Performance improvements and bug fixes.
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