# Oxygen Calculation Tool > Medical transport oxygen and drip rate calculation tool. (iPhone/iPad app by Joshua Savko.) - Source: https://appshunter.io/ios/app/oxygen-calculation-tool/id1502863745 (this page in markdown: same URL + `.md`) - Developer: [Joshua Savko](https://appshunter.io/developer/1502863744) - Category: Reference, Medical - Price: $0.99 - Rating: 4.82/5 from 152 App Store ratings · 3 written reviews indexed - Age rating: 12+ - Requires: iOS 15.4 · 15 MB - Languages: English - Released: 2020-04-07 - Data updated: 2026-09-03 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/oxygen-calculation-tool/id1502863745/reviews.md ## What is Oxygen Calculation Tool? Oxygen Calculation Tool is an app designed with transport medical professionals in mind. Once you enter your oxygen supply and a flow rate, your minutes of usable oxygen will be generated. Oxygen Calculation Tool makes it easy to add and delete up to 10 cylinders for both the portable and onboard supply. The user also has the flexibility to enter the flow rate as a free flow setting or from ventilation settings, calculated from the minute ventilation and the FiO2 settings. Optionally, user can also enter ventilator-specific bias flow, if needed. Oxygen Calculation Tool also has a countdown feature. This can be used to time your O2 use with your chosen settings. Using the countdown will update the settings automatically. The drip rate calculator can be used to assist you with med math. Enter the supply and dose information and the calculator will determine the rate in ml/hr. Oxygen Calculation Tool contains a reference page, where the math calculation used in this app is outlined, along with a list of oxygen cylinders and associated conversion factors. If you don't see a cylinder size that you need, use the feedback feature found in the settings to let me know and I will try to add it. This app is also dark mode compatible. Calculations are rounded down to the nearest whole minute. ***Please note, this app does NOT subtract 200 psi from initial input to account for residual O2. Some formulas may call for this. If this is desired by users, you can subtract 200 psi from your pressure prior to input. ## Key features - Oxygen supply calculation - Drip rate calculator - Countdown timer - Reference page with conversion factors - Dark mode compatibility - Supports up to 10 cylinders ## Chart rankings - #75 in Top Paid · Reference (US App Store) ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/oxygen-calculation-tool/id1502863745/reviews.md ### 5/5 — Easy to use *2023-05-12, version 1.4* Very intuitive and simple interface. Accuracy is very good. I highly recommend this app, it’s a great value. ### 5/5 — Oxygen Calculator *2021-09-09, version 1.2.4* 5/5 Easy to learn Easy to use ### 5/5 — Perfect *2020-12-30, version 1.2.1* A must have especially for the winter of 2020! ## Frequently asked questions about Oxygen Calculation Tool ### What is the Oxygen Calculation Tool used for? The Oxygen Calculation Tool is designed for medical transport professionals to calculate the minutes of usable oxygen based on supply and flow rate. It also includes a drip rate calculator for medication math and a reference page. ### How accurate are the oxygen calculations? Calculations are rounded down to the nearest whole minute. The app does not automatically subtract 200 psi for residual oxygen, which users can do manually before input if desired. ### Can I add custom cylinder sizes to the Oxygen Calculation Tool? Yes, if a needed cylinder size is not listed, you can use the feedback feature in the settings to request its addition. The developer will try to include it in future updates. ### What devices is the Oxygen Calculation Tool available on? The Oxygen Calculation Tool is available for iPhone, iPad, and iPod devices. ### What is the price of the Oxygen Calculation Tool? The Oxygen Calculation Tool is a paid app, priced at $0.99. ### How often is the Oxygen Calculation Tool updated? The app was last updated on May 1, 2022, to version 1.4. This indicates a moderate update frequency. ### What is the age rating for the Oxygen Calculation Tool? The Oxygen Calculation Tool has an age rating of 12+, making it suitable for users aged 12 and older. ### Does the Oxygen Calculation Tool have a dark mode? Yes, the Oxygen Calculation Tool is compatible with dark mode, which can provide a more comfortable viewing experience in low-light conditions. ## Version history (last 5 releases) ### 1.4 — 2022-05-01 Updated to function with latest Apple software version. Fixed bug that would crash app when deleting oxygen bottles. ### 1.3 — 2021-09-15 Added a custom conversion factor field in case the factor that you need is not preset in the app. Increased the amount of cylinders that you can add from 3 to 10 for both portable and onboard. Fixed a bug that would cause app to crash on the countdown screen. ### 1.2.4 — 2021-05-16 Additional cylinder choice added. ### 1.2.3 — 2021-02-27 Added a couple new cylinder choices. ### 1.2.2 — 2021-01-11 Adjusted textfield behaviors to make it a little easier to use. ## Apps similar to Oxygen Calculation Tool | App | Rating | Price | Category | | --- | --- | --- | --- | | [Surge & Swab Pressure Calc](https://appshunter.io/ios/app/surge-and-swab-pressure-calc/id1482426110) | 1.0 (1) | $0.99 | Reference | | [OilField Formulas iHandy Calc](https://appshunter.io/ios/app/oilfield-formulas-ihandy-calc/id875486327) | — | $1.99 | Reference | | [Omega Liner Company](https://appshunter.io/ios/app/omega-liner-company/id1580050311) | — | Free | Reference | | [OilField iHandbook](https://appshunter.io/ios/app/oilfield-ihandbook/id916850671) | — | $1.99 | Reference | ## Related topics [cylinder duration](https://appshunter.io/ios/topics/cylinder-duration) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*