Dive Kit: Deco Planner & Tools

A precision pass on the gas math, a fresh look, and a new language. Your tank, by the spec sheet Imperial cylinder capacities now use the exact convention US manufacturers print: real gas at 1 atmosphere and 70 °F. An AL80 reads 77.4 ft³, matching Luxfer's published figure, and the capacity field now accepts decimals, so you can type the spec-sheet number and get exactly that tank. Sharper gas math - Plans at altitude now compute gas use from the real surface pressure (it was anchored at sea level, overstating stop gas at altitude). - CCR: staged descents now charge the loop the correct diluent. Deeper legs were under-counted before. - Shared plans carry exact cylinder sizes, so the recipient sees precisely the plan you sent. - Buoyancy gas weights and the SAC readout were refined. A new look The bottom tab bar is now a compact floating glass pill that picks up each tool's color as you move around the app, and the deco planner's stats bar floats just above it. Content scrolls beneath both through frosted glass. Now in Simplified Chinese The entire app: every tool, tutorial, checklist, and dive signal. Deco stop schedules are unchanged by this update.