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...
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.
Version History Finally got around to adapting the app to iOS 26 2.4 5d ago This update fixes a small but annoying bug 2.3.1 03/28/2023 Some minor UI updates and improved compatibility with iOS 16 / watchOS 9 2.3 01/30/2023 This update adds a calculator for the partial pressure of O2 - given a depth and a gas mix, what is the PPO2? 2.2 04/24/2022 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. 2.1 07/25/2021 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. 2.0.1 04/19/2021 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 04/18/2021 Updated for iOS 13 and dark mode 1.8 09/20/2019 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! 1.7 03/28/2019 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 05/16/2018 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! 1.5 03/07/2018 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! 1.4.1 12/20/2016 updated for iOS 9 and 10 adds 1.5 bar as maxPP02 value adds setting to increase O2 % to 100 1.4 12/05/2016 minor changes for iOS 7 1.3 12/12/2013 Updates for iOS 7 1.2 09/24/2013 new icons 1.1 11/16/2012 1.0 11/03/2012
Previous Versions
Here you can find the changelog of Nitrox Buddy since it was posted on our website on 2016-09-30 01:26:12.
The latest version is 2.4 and it was updated on 2026-06-15 16:41:11. See below the changes in each version.
Nitrox Buddy version 2.4
Updated At: 2026-06-15
Changes: Version History Finally got around to adapting the app to iOS 26 2.4 5d ago This update fixes a small but annoying bug 2.3.1 03/28/2023 Some minor UI updates and improved compatibility with iOS 16 / watchOS 9 2.3 01/30/2023 This update adds a calculator for the partial pressure of O2 - given a depth and a gas mix, what is the PPO2? 2.2 04/24/2022 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. 2.1 07/25/2021 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. 2.0.1 04/19/2021 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 04/18/2021 Updated for iOS 13 and dark mode 1.8 09/20/2019 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! 1.7 03/28/2019 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 05/16/2018 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! 1.5 03/07/2018 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! 1.4.1 12/20/2016 updated for iOS 9 and 10
adds 1.5 bar as maxPP02 value
adds setting to increase O2 % to 100 1.4 12/05/2016 minor changes for iOS 7 1.3 12/12/2013 Updates for iOS 7 1.2 09/24/2013 new icons 1.1 11/16/2012 1.0 11/03/2012
Nitrox Buddy version 2.3.1
Updated At: 2026-05-11
Changes: Version History This update fixes a small but annoying bug 2.3.1 03/28/2023 Some minor UI updates and improved compatibility with iOS 16 / watchOS 9 2.3 01/30/2023 This update adds a calculator for the partial pressure of O2 - given a depth and a gas mix, what is the PPO2? 2.2 04/24/2022 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. 2.1 07/25/2021 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. 2.0.1 04/19/2021 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 04/18/2021 Updated for iOS 13 and dark mode 1.8 09/20/2019 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! 1.7 03/28/2019 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 05/16/2018 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! 1.5 03/07/2018 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! 1.4.1 12/20/2016 updated for iOS 9 and 10
adds 1.5 bar as maxPP02 value
adds setting to increase O2 % to 100 1.4 12/05/2016 minor changes for iOS 7 1.3 12/12/2013 Updates for iOS 7 1.2 09/24/2013 new icons 1.1 11/16/2012 1.0 11/03/2012
Nitrox Buddy version 2.3.1
Updated At: 2023-03-28
Changes: Mar 28, 2023
Version 2.3.1
This update fixes a small but annoying bug
Nitrox Buddy version 2.3.1
Updated At: 2023-03-28
Changes: This update fixes a small but annoying bug
Nitrox Buddy version 2.2
Updated At: 2022-04-24
Changes: Apr 24, 2022 Version 2.2
This update adds a calculator for the partial pressure of O2 - given a depth and a gas mix, what is the PPO2?
Nitrox Buddy version 2.1
Updated At: 2021-07-25
Changes: Jul 25, 2021 Version 2.1
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.
Nitrox Buddy version 2.0.1
Updated At: 2021-04-19
Changes: Apr 19, 2021 Version 2.0.1
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.
Nitrox Buddy version -
Updated At: 2021-01-15
Nitrox Buddy version 1.8
Updated At: 2019-09-20
Changes: 20 Sep 2019 Version 1.8
Updated for iOS 13 and dark mode
Nitrox Buddy version 1.8
Updated At: 2019-09-20
Changes: Sep 20, 2019 Version 1.8
Updated for iOS 13 and dark mode
Disclaimer
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