Nitrox Buddy2.4 - App Store
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Publisher Description
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 Jun 9 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
About Nitrox Buddy
The company that develops Nitrox Buddy is Gereon Steffens. The latest version released by its developer is 2.4.
To install Nitrox Buddy on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Nitrox Buddy as malware if the download link is broken.
How to install Nitrox Buddy on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the Nitrox Buddy is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After Nitrox Buddy is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 2.4
posted on 2026-10-14
Version History Finally got around to adapting the app to iOS 26 2.4 Jun 9 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
version 2.4
posted on 2026-06-15
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
version 2.3.1
posted on 2026-05-11
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
version 2.3.1
posted on 2023-03-28
This update fixes a small but annoying bug
version 2.3.1
posted on 2023-03-28
Mar 28, 2023
Version 2.3.1
This update fixes a small but annoying bug
version 2.2
posted on 2022-04-24
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?
version 2.1
posted on 2021-07-25
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.
version 2.0.1
posted on 2021-04-19
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.
version -
posted on 2021-01-15
version 1.8
posted on 2019-09-20
20 sept. 2019 Version 1.8
Updated for iOS 13 and dark mode
Disclaimer
Official App Store Link
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