EANx Assistant vs Deep Frontier Dive Tools

EANx Assistant is a nitrox diving calculation tool designed for recreational divers and diving instructors. Whether you are a professional diving instructor or a nitrox diving enthusiast, this application can help you perform various nitrox diving-related calculations quickly and accurately. 【Main Features】 • Maximum diving depth calculation: Automatically calculates safe diving depth limits based on oxygen content percentage • Optimal nitrox ratio calculation: Provides the best gas mixture ratio for specified depths • Equivalent Air Depth calculation: Converts nitrox diving to equivalent air diving depth • Oxygen partial pressure calculation: Real-time monitoring of oxygen partial pressure values at different depths and gas mixtures • Adjustable maximum PPO₂ value: Supports customized safety thresholds, default is 1.4 【Usage Scenarios】 • Pre-dive planning: Quickly determine the optimal gas mixture for your diving plan • Teaching aid: Diving instructors can use it for training courses and on-site teaching 【Thoughtful Design】 • Clean and intuitive blue interface, reducing recognition pressure • Bilingual support in Chinese and English, meeting the needs of international divers • Intuitive slider controls for quick parameter adjustments EANx Assistant makes complex nitrox diving calculations simple. No internet connection required, perform calculations anytime, anywhere - an indispensable digital tool in your diving equipment. Note: This application is only intended as an auxiliary calculation tool and should not replace professional dive training and certification. Always follow safe diving rules and receive appropriate training before using nitrox gas mixtures.

Deep Frontier Dive is a decompression planner for trained technical divers. Plan open-circuit and CCR dives with two validated models, complete gas planning, and the contingencies that matter — on iPhone and iPad, fully offline, in metric units. TWO DECOMPRESSION MODELS • Bühlmann ZHL-16C with gradient factors — presets or fully custom GF low/high • VPM-B and VPM-B/GFS with conservatism levels 0–4 • Cross-validated against published reference schedules OPEN CIRCUIT AND CCR • Open-circuit plans with automatic gas switches at sensible depths — ppO2 hard-capped at 1.6, lean deco mixes at 1.4 • CCR plans with bottom and deco setpoints and diluent control • Full open-circuit bailout schedules from your carried bailout gases — never assumed, always checked, with clear warnings when coverage or volume falls short GAS PLANNING • Per-cylinder consumption from your bottom and deco SAC rates • Reserve strategies including rule of thirds • Minimum gas / rock bottom for a two-diver problem at depth • Lost-gas contingencies: every deco gas lost, replanned, and checked against the remaining volumes DIVE DAYS • Repetitive dives with surface intervals • Tissue and bubble state carried from dive to dive • Cumulative CNS and daily OTU totals WARNINGS THAT MATTER ppO2, END, gas density, isobaric counterdiffusion (rule of fifths), CNS and OTU — flagged as caution or danger before you get wet. GAS TOOLS MOD, best mix, EAD, END, gas density and equivalent air-density depth, SAC calculator, and partial-pressure blending worksheets. BUILT FOR THE FIELD • Altitude diving support • Three configurable ascent-rate phases: bottom to deco, during deco, deco to surface • Salt and fresh water • Saved plans — editable, duplicable, never locked • Runtime tables with depth, duration, runtime, gas and ppO2 for every level • Depth-profile chart with stops and gas-switch markers • Works completely offline. No account, no ads, no tracking. FREE AND PRO Open-circuit Bühlmann planning, the gas plan and saved plans are free forever. A single one-time purchase — Deep Frontier Dive Tools Pro — unlocks CCR planning, VPM-B, lost-gas contingencies, dive days and the gas tools. No subscription. IMPORTANT This app is a planning tool for trained technical divers. It is not a substitute for formal training, a dive computer, or your own judgement. Decompression planning involves inherent uncertainty: always validate schedules against your training and agency procedures, plan adequate reserves, and dive entirely at your own risk.