213+ iOS apps curated and reviewed
Out of 213+ hypoxi apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | Aug 2026 |
| 2 |  | Free | 4.7★ (277) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.5★ (8) | No | No | May 2026 |
| 4 |  | Free | — | No | No | Jul 2026 |
| 5 |  | Free | — | Yes | Yes | May 2026 |
| 6 |  | Free | — | No | No | Aug 2026 |
| 7 |  | Free | — | No | No | Aug 2026 |
| 8 |  | Free | — | No | No | May 2026 |
This app helps improve breath-holding capabilities for freediving, underwater hunting, and yoga. It calculates personalized training tables based on your maximum breath-hold time and offers various exercises to enhance stamina and control. Track your progress with statistics and charts, and utilize customizable timers with voice and vibration notifications.
Calculates remaining oxygen in a cylinder for ambulatory users. Input device, liter flow, and cylinder size for precise remaining hours and minutes. Provides peace of mind for oxygen users on the go.
Visualize and understand the oxygen-hemoglobin dissociation curve. This medical tool shows the relationship between oxygen partial pressure and hemoglobin saturation, highlighting factors that shift the curve and critical care points.
Easily record your daily pulse and blood oxygen levels. Track your health statistics over time with simple data entry and clear visualizations. Requires an external device like a pulse oximeter or smartwatch for measurements.
A clinical reference tool for healthcare professionals managing mechanical ventilation and oxygen therapy. It provides information grounded in respiratory physiology and evidence-based critical care.
Explore dive industry insights, research, and safety information. Discover underwater photography, travel destinations, and marine environmental topics. This app provides valuable content for divers and enthusiasts.
Enhance your freediving and apnea skills with personalized training plans. Improve breath-hold endurance, CO₂ tolerance, and hypoxia adaptation. Track progress and learn scientific techniques for deeper exploration.
Create an oxygen-enriched environment in your mountain home to prevent or lessen altitude sickness. This app allows you to remotely control your home's oxygen levels for quicker acclimatization, whether you live at high altitudes or are visiting.
This app offers a comprehensive platform for structured breath-hold training, featuring guided exercises, customizable tables, and educational articles. It's designed to improve performance and safety for freedivers and breathwork practitioners.
This app helps freedivers manage their training and dive information. It offers various training modules, including CO2 and O2 adaptation, static apnea, and dive simulations. Users can track their progress, find dive buddies, and access educational content.
This app calculates the alveolar-arterial oxygen gradient (A-a gradient) and the PaO2/FiO2 ratio. It provides formulas and explanations for these important respiratory measurements, useful for medical professionals and students.
This application helps medical professionals and supply chain managers calculate total oxygen demand for various medical devices. It supports different oxygen sources like cylinders, liquid oxygen, and concentrators, aiding in efficient supply management for hospitals and individual users.
