Introduction
Nitrox Essentiels is a compact, purpose-built tool for recreational and technical Nitrox divers who need fast, reliable gas planning and verification on the surface or at the dive site. Nitrox Essentiels places the core calculators and planning helpers within a simple interface so you can determine PMU and MOD from FO2 and maximum PpO2 quickly, estimate optimal mixes for a target depth, and model common refill workflows that combine pure oxygen and air. The app is designed to be a practical companion for pre-dive checks, training drills, and on-site verification alongside your instruments.
How it works
The app guides you through the typical steps a diver uses to prepare a Nitrox gas: enter the fraction of oxygen (FO2) or the partial pressure of oxygen (PpO2), and the calculators return MOD and PMU values using standard equations familiar to dive training agencies. Nitrox Essentiels also supports mix selection by suggesting oxygen percentages that meet a chosen maximum PpO2 and target depth, and it shows the trade-offs in dive time and gas reserve. Refill and blending helpers let you simulate adding pure oxygen and topping off with air so you can preview resulting FO2 and bottle pressures before you touch the valve.
Controls and user interaction
The interface is intentionally streamlined for field use: numeric inputs, sliders, and clearly labeled unit toggles minimize typing under pressure. Units are configurable between bar and psi and between meters and feet so you can match local practices and instrumentation. The main screens put the most critical outputs—MOD, PMU, recommended FO2, and PpO2 limits—within one glance, and a training mode can optionally reveal the detailed intermediate calculations for instructors or students to verify steps manually.
Planning, progression and saved profiles
Rather than a game-style progression, the app offers a practical progression system for learning and record-keeping: create and save diver profiles, store repeated plan templates, and maintain a history of past plans. This lets instructors track how trainees develop their understanding of mix selection and gas management. The plan history serves as both a study aid and an operational log that you can consult when reviewing decisions after a training session or a day of multiple dives.
Visual style and accessibility
Nitrox Essentiels favors high-contrast, readable displays suitable for outdoor environments and low-light conditions. Light and dark themes are available to match your device settings and reduce glare when you’re on the water. Fonts and controls are sized to be accessible on a range of device screens, and the layout is optimized so that critical numbers remain visible even on smaller phones. The app avoids cluttered graphics in favor of clear numeric readouts and concise labels to support quick comprehension.
Profile structure and replay value
The app structures work around single-dive plans and multi-profile days: you can compose a single profile with target depth and FO2 or build a sequence of profiles for a dive day with multiple tanks and different blends. This structure increases the practical replay value for divers who repeatedly run similar scenarios, such as instructors prepping class sessions or dive guides managing multiple clients. The ability to replay and tweak saved plans encourages iterative learning and systematic pre-dive verification.
Customization and configuration
Customization focuses on matching the app to your procedures: select preferred units, set default maximum PpO2 values based on your training organization, and save a personal diver profile with name and initials that appear in plan headers. These settings speed up routine checks and help ensure consistent application of your organization’s gas planning standards. Nitrox Essentiels keeps these options local on your device so you retain control over defaults and privacy.
Offline use, reliability, and limitations
The app is fully usable offline to support remote shorelines or boats where connectivity is limited; all calculations and saved histories are stored locally. It is important to recognize that Nitrox Essentiels is a calculation aid and training tool, not a substitute for formal dive training, agency procedures, official tables, or a dive computer. The app does not perform physical gas analysis and does not integrate with external sensors to read cylinder content automatically, so actual gas analysis with calibrated equipment is still required before putting a mix into service.
Training mode and safety emphasis
Training mode is intended to support instructors and self-study: it exposes intermediate calculation steps so students can follow the logic behind MOD, PMU, and oxygen exposure tracking. Safety features emphasize conservative defaults and clear warnings when selected parameters exceed commonly recommended limits. While Nitrox Essentiels helps reduce cognitive load during planning, ultimate responsibility rests with the diver to follow training, confirm gas mixtures by analysis, and use certified instrumentation during dives.
Information
Google Play
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