O2 Duration 4+

Advanced Aviation LLC

Designed for iPhone

    • 1.0 • 1 Rating
    • $2.99

iPhone Screenshots


O2 Duration is an oxygen consumption calculator for various oxygen cylinder sizes. This is the easiest way to quickly determine the approximate number of minutes until an oxygen tank will be depleted of oxygen. This tool is a must have for Nurse's and EMT’s who work with portable oxygen cylinders.

The application allows you to select cylinder tank sizes A, B, D E, G, H, K and M. With the current tank pressure and desired flow rate, the app will display the oxygen duration in minutes. Additionally, a timer can be started which will display a running tank pressure and time in minutes remaining until the tank is empty. When tank pressure reaches 500lbs or when the tank pressure is zero the application will alert you.

This is not a substitute for looking at the oxygen cylinder gauge to determine actual pressure and should not be relied on as a means to determine oxygen remaining.

What’s New

Version 2.0

This app has been updated by Apple to display the Apple Watch app icon.

You can now edit tank names and size factors. Create your own custom tanks or modify the current list of tanks. Add and delete tanks as need to customs the app for your needs.
Bugs have been fixed.

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

drnlv ,


Math is wrong
Does not work and no refund
I would have thought Apple would have vetted this product
Do no buy!

M@5s ,


My husband uses an m-248L (the old C class) There is no distinction between the tank sizes for the M class tanks that I can find on the app and there doesn't seem to be a corresponding tank size to pick. I am looking forward to using this app it seems very easy once I can get the correct tank size

App Privacy

The developer, Advanced Aviation LLC, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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