SUB-ZERO
Marmak Industries Ltd
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About this app
SUB-ZERO is the all-in-one ice operations platform designed to help arenas deliver elite ice conditions, improve efficiency, and make smarter, data-driven decisions every single day. Built specifically for rink operators, technicians, and facility managers, SUB-ZERO replaces paper logs and guesswork with real-time digital tracking, operational visibility, and actionable insights. Core Features Ice Intelligence Record ice thickness across full-sheet measurement grids Track surface temperature and hardness (Shore C) Monitor water quality, including temperature, TDS, and pH Visualize trends and support more consistent, high-quality ice conditions Flood and Resurfacing Logs Digitally log each flood in seconds Track water usage, flood duration, and flood frequency Identify inefficiencies and reduce waste over time Ice Resurfacer Tracking Log equipment usage and operational performance Monitor blade changes, maintenance activity, and repairs Improve consistency across operators and resurfacing routines Plant and Facility Readings Record key ice plant data alongside daily ice operations Compare plant performance with ice condition results Support better energy use and more efficient facility operation SUB-ZERO gives arena teams a single, connected system for managing ice quality, equipment activity, and daily operational reporting.
What's new
Version 1.8 · Oct 30, 2026
Settings, all in one place • A gear icon now sits at the top of every screen. Tap it and the settings slide up over your work, and swipe down to close. Nothing you have part-filled is lost. • Text size now has four options with a live preview, so you can see real readings at that size before choosing. • Light or dark mode and English or French are in that same panel, instead of spread through the menu. Ice depth checks • The buttons in the reading popup no longer overlap on the larger text sizes. • Move a reading popup to where it suits you and every popup after that opens in the same place, so you are not dragging it on every point. Also in this version • Clearer messages when the server cannot be reached, in place of technical detail. • Removed the promotional popup and the side menu banner.
