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Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Nitrox Buddy Screenshots

iPhone

About Nitrox Buddy

Nitrox Buddy is a no-frills calculator app for nitrox/enriched air divers - use it to quickly calculate the most important data for your dive: Maximum Operating Depth/MOD, Equivalent Air Depth/EAD, Best Mix and PPO2.

The app works with imperial or metric measurements, sea or fresh water, and allows you to select the maximum oxygen content and partial pressure.

A companion watch app puts lets you perform all these calculations on your wrist.

What's New in the Latest Version 2.3.1

Last updated on Mar 28, 2023

Old Versions

This update fixes a small but annoying bug

Version History

2.3.1

Mar 28, 2023

This update fixes a small but annoying bug

2.3

Jan 30, 2023

Some minor UI updates and improved compatibility with iOS 16 / watchOS 9

2.2

Apr 24, 2022

This update adds a calculator for the partial pressure of O2 - given a depth and a gas mix, what is the PPO2?

2.1

Jul 25, 2021

This update adds 1.5 bar to the possible values for max PPO2.
Also, warnings for unrealistic/dangerous values in the EAD calculation are now clearer.

2.0.1

Apr 19, 2021

Redesigned the app from the ground up - all information is now immediately visible, without needing to lift your hand.
Also added a new settings for salt or fresh water dives, and a companion watch app.

2.0

Apr 18, 2021

1.8

Sep 20, 2019

Updated for iOS 13 and dark mode

1.7

Mar 28, 2019

Nitrox Buddy is now also available in French.

If you're enjoying using Nitrox Buddy, please consider leaving a positive review or rating in the App Store. If you've reviewed or rated a previous version, please resubmit it as ratings are reset with every new update. Thank you very much for your support, it's really appreciated!

1.6

May 16, 2018

If you're enjoying using Nitrox Buddy please consider leaving a positive review or rating in the App Store. If you've reviewed or rated a previous version, please resubmit it as ratings are reset with every new update. Thank you very much for your support, it's really appreciated!

1.5

Mar 7, 2018

Updated for iPhone X

If you're enjoying using Nitrox Buddy please consider leaving a positive review or rating in the App Store. If you've reviewed or rated a previous version, please resubmit it as ratings are reset with every new update. Thank you very much for your support, it's really appreciated!

1.4.1

Dec 20, 2016

Selecting 100% O2 no longer automatically switches to imperial units

If you're enjoying using Nitrox Buddy, please consider leaving a positive review or rating in the App Store. If you've reviewed or rated a previous version, please resubmit it as ratings are reset with every new update. Thank you very much for your support, it's really appreciated!

1.4

Dec 5, 2016

updated for iOS 9 and 10
adds 1.5 bar as maxPP02 value
adds setting to increase O2 % to 100

1.3

Dec 12, 2013

minor changes for iOS 7

1.2

Sep 24, 2013

Updates for iOS 7

1.1

Nov 16, 2012

new icons