About HOTCalculator
Calculate hold-over time fast and easy with the HOTCalculator! With this app you can find the holdover-time in a few seconds. No more searching for the right page and table in your paper manuals. Very handy tool for all...
Calculate hold-over time fast and easy with the HOTCalculator! With this app you can find the holdover-time in a few seconds. No more searching for the right page and table in your paper manuals. Very handy tool for all pilots during winter ops. The perfect tool to include in your Electronic Flight Bag! Features: - Support for Type I, Type II, Type III and Type IV de-icing and anti-icing fluids - *NEW*: Select FAA or Transport Canada HOT guidelines - Use °C or °F as appropriate - *NEW*: Includes adjusted holdover times for anti-icing with flaps extended - Usable in flight mode, when you need it the most - Set a timer that gives off an alarm when the holdover-time expires - Includes Allowance Times for Type IV fluids Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Previous Versions
Here you can find the changelog of HOTCalculator since it was posted on our website on 2016-09-24 14:04:30.
The latest version is 5.0.1 and it was updated on 2026-06-23 14:14:29. See below the changes in each version.
HOTCalculator version 5.0.1
Updated At: 2026-06-02
Changes: Version History - Bugfix: Timer counting down in background (iOS 26)
- Bugfix: Fetching subscription data before loading the view. 5.0.1 10/01/2025 Updated Holdover times for winter 2025-2026.
Entirely rewritten in SwiftUI. 5.0 09/25/2025 - Holdover times for winter 2024-2025
- Select FAA or Transport Canada HOT guidelines
- Includes adjusted holdover times for anti-icing with flaps extended 4.0 10/22/2024 Updated for winter 2023-2024. 3.7 09/22/2023 Holdover Times Updated for Winter 2022-2023. 3.6 09/27/2022 Timer and critical alert when Holdover-time expires. 3.5 12/30/2021 Corrections to new fluid. 3.4.2 10/19/2021 Added brand specific type IV fluid: Clariant Safewing MP IV Launch.
(All data is updated for winter 2021-2022.) 3.4.1 10/14/2021 Updated holdover times and allowance times for winter 2021-2022.
Improved dark mode. 3.4 09/27/2021 Updated Hold Over Times and Allowance Times for winter 2020-2021. 3.3.1 10/14/2020 - Updated hold-over time tables for winter 2020-2021, in accordance with Transport Canada guidelines. 3.3 10/07/2020 Adaptivity to all Apple devices.
Improved launch from URL schedule. 3.2.1 02/12/2020 - iOS 13 compatibility, including dark mode 3.2 10/29/2019 Updated Hold Over Times for winter 2019-2020. 3.1.1 09/28/2019 - Updated hold-over time tables for winter 2018-2019.
- Allowance times for Ice Pellets and Small Hail for Type IV fluids included.
- Guidance on allowance times included.
- Snowfall Intensity vs Visibility table included. 3.1 09/27/2018 - Added hold-over time table for ABAX Ecowing AD-2 Type II. 3.0.1 03/31/2018 Updated holdover tables for winter 2017-2018.
Data from FAA in accordance with EASA SIB 2017-11 (Global Aircraft De-icing Standards).
User interface reworked, compatible with iOS 11.
Possibility to use in split view and side-by-side.
Possibility to open from other apps such as FlightBriefing. 3.0 10/26/2017 - Updated hold-over time tables for winter 2016-2017. 2.1.5 09/26/2016 - Added hold-over time table for ABAX Ecowing 26 Type II. 2.1.4 01/20/2016 - Updated hold-over time tables for winter 2015-2016. 2.1.3 10/17/2015 - Updated hold-over time tables for winter 2014-2015.
- Updated user interface to iOS 7/8 2.1.2 10/22/2014 - Updated hold-over time tables for winter 2013-2014. 2.1.1 10/17/2013 Updated hold-over time tables for winter 2012-2013.
Adapted for iPhone 5. 2.1 10/18/2012 - iPad support added: universal app for both iPad and iPhone/iPod
- User interface adapted for iPad 2.0 12/10/2011 - Updated fluid holdover times
- Source and revision date for each fluid
- Color coded fluids
- Request for fluid from the information page -> send feedback
- Optimized memory usage 1.2 11/20/2011
HOTCalculator version 5.0.1
Updated At: 2025-10-01
Changes: - Bugfix: Timer counting down in background (iOS 26)
- Bugfix: Fetching subscription data before loading the view.
HOTCalculator version 5.0
Updated At: 2025-09-25
Changes: Sep 25, 2025
Version 5.0
Updated Holdover times for winter 2025-2026.
Entirely rewritten in SwiftUI.
HOTCalculator version 4.0
Updated At: 2024-10-22
Changes: Oct 22, 2024
Version 4.0
- Holdover times for winter 2024-2025
- Select FAA or Transport Canada HOT guidelines
- Includes adjusted holdover times for anti-icing with flaps extended
HOTCalculator version 3.7
Updated At: 2023-09-22
Changes: Sep 22, 2023
Version 3.7
Updated for winter 2023-2024.
HOTCalculator version 3.6
Updated At: 2022-09-27
Changes: Sep 27, 2022
Version 3.6
Holdover Times Updated for Winter 2022-2023.
HOTCalculator version 2.1.4
Updated At: 2011-03-06
Disclaimer
Official App Store Link
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