Oxygen Countdown

A simple yet versatile Oxygen countdown timer for people using home oxygen therapy.
Start the app when you turn on your oxygen supply and it will tell you the time of day it will run out, how long you have left and how much oxygen is left.
Also displays the date, the time and provision to save and restore settings if a cylinder is only partially used.
Works with both phone and tablet. There are text, speech, vibration for phone and warning sounds at 10, 2 and zero minutes of oxygen left.
Warning sounds can be controlled by a volume slider and speech warnings turned on or off.
Optimised for the UK it is invaluable for oxygen users when out and about to have the security of knowing how much oxygen they have left before having to change supply. The gauges of the supplied cylinder or flask can only give an idea of the contents left, not how much time you have left.
Caters for CD, ZA, ZH cylinders and liquid oxygen Hi-Flow, Spirit 300, 600 and 1200 flasks. Also caters for flow rates of 0.1 to 15 litres per minute.
Simple to use. Start the app, select your supply, select your flow rate and that’s it!