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スマートウォッチでも使えるようにして欲しいです！
スマホ持って仕事できなくて。
かなり利便性増すと思います！
スマホ持って仕事できなくて。
かなり利便性増すと思います！
Free
About
This medical utility app assists healthcare professionals with critical oxygen management calculations. It offers features like oxygen remaining time estimation, FiO2 calculation, and pressure unit conversion, all within a clean, ad-free, and offline-capable interface.
✓Oxygen remaining time calculation
✓FiO2 estimation by device
✓Pressure unit conversion
✓3-stage abnormal value alerts
✓Double-check screen
✓Independent dark mode
✓Live Activities & Dynamic Island integration
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What's New in 酸素ボンベの残量計算 / O2Calc
1.2
June 16, 2026
軽微な修正を行いました
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FAQ
What is O2Calc?
O2Calc is a dedicated calculation tool for medical professionals, designed to estimate oxygen remaining time, FiO2, and convert pressure units. It aims to streamline these calculations, which are essential in clinical practice.
Does O2Calc have ads?
No, O2Calc is completely ad-free, ensuring that your concentration is not interrupted by advertisements or accidental taps. This focus on an ad-free experience is a key design principle.
Can I use O2Calc offline?
Yes, O2Calc is fully offline-capable. This means you can perform all calculations accurately even in areas with no internet connection, such as within hospital wards or underground facilities.
How does O2Calc handle safety?
O2Calc incorporates safety features like 3-stage abnormal value alerts that change screen color and vibrate to warn users of results outside normal ranges. It also includes a dedicated double-check screen for results.
What is the pricing for O2Calc?
O2Calc offers a 7-day free trial, after which a one-time in-app purchase is required for a permanent license. There are no ongoing subscriptions or additional fees for features.
What devices does O2Calc support?
Currently, O2Calc is supported on iPhones. The app is designed to be compatible with the iOS ecosystem.
How often is O2Calc updated?
The latest version of O2Calc is 1.2, which was last updated on June 16, 2026. Updates are released to improve functionality and reliability.
Is O2Calc suitable for all ages?
O2Calc has an age rating of 17+, indicating it is intended for adult users, specifically medical professionals, due to its specialized nature and clinical context.