Nitrox Helper vs Dive Kit

Nitrox Helper is a Nitrox calculator designed for qualified EAN divers. Whether you're at the dive shop deciding on your mix or reviewing calculations before a dive, Nitrox Helper gives you quick, accurate answers with an interface designed for ease of use - even with cold hands. Your essential dive buddy for Enriched Air Nitrox (EAN) calculations. FOUR POWERFUL CALCULATORS Best EAN Mix Calculate the optimal oxygen percentage for your planned depth and PPO limit. Know exactly what mix to ask for at the fill station. Maximum Operating Depth (MOD) Determine the deepest safe depth for any Nitrox mix. Essential for dive planning and safety. Equivalent Air Depth (EAD) Convert your Nitrox dive to an equivalent air depth for use with standard Recreational Dive Planner (RDP) tables. Oxygen Partial Pressure (PPO) Monitor your oxygen partial pressure at any depth. Clear safety indicators warn you when approaching or exceeding safe limits. SALT WATER & FRESH WATER Calculate accurately for both environments. Sea water (10.0 m/atm) and fresh water (10.3 m/atm) use different pressure factors - Nitrox Helper accounts for this automatically. A read-only indicator on every calculator tab shows your current water type so you always know what you're calculating for. 8 LANGUAGES Use the app in your preferred language: English (UK), English (US), Afrikaans, Greek, French, Spanish, German, and Dutch. PERSONALISE YOUR EXPERIENCE - 16 beautiful colour themes - Metric (metres) or Imperial (feet) units - Configurable decimal places (0-3) for depth and PPO results - Per-tab unit switching from the toolbar DESIGNED FOR SAFETY - Clear PPO safety status indicators (Safe / Caution / Danger) - Visual warnings when exceeding Maximum Operating Depth - Read-only water type indicator prevents accidental changes - Important safety disclaimer on every calculator PRIVACY FIRST Your data stays on your device. No tracking, no analytics, no account required, no internet connection needed. TRY BEFORE YOU SUBSCRIBE The app has two separate trial mechanisms: 1. Nitrox Helper is free to download with a 30-day in-app trial that gives full access for 30 days. 2. 2-week introductory offer — Available on the Monthly, 6 Monthly, and Annual subscription plans. Compatible with iPhone and iPad. The Pro Tier has three subscription options. Nitrox Helper Pro Monthly at $0.99 a month with a 2-week free trial. Nitrox Helper Pro 6 Months at $5.99 every 6 months with a 2-week free trial. Nitrox Helper Pro Annual at $9.99 a year with a 2-week free trial — our best value. Nitrox Helper Pro Lifetime at $49.99 one-time. You control your subscriptions through the App Store subscription settings. DISCLAIMER: This calculator is for discussion purposes only and is not intended for actual dive planning. Always refer to your certifying agency's Enriched Air Diving procedures to plan your dives. Privacy Policy URL https://solosoftware.app/nitrox-helper/Nitrox_H_Privacy_Policy.html Your use of Nitrox Helper is governed by Apple's standard Licensed Application End User License Agreement. Terms of Service (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

A full deco planner in your pocket, and a free toolkit for the rest of the dive. Dive Kit plans open-circuit, trimix, and CCR dives with Bühlmann ZH-L16C and the gradient factors you choose. You see every assumption behind a schedule, and a share link reopens the exact plan on your buddy's phone or in any browser. Everything runs offline. The display stays readable in direct sun, the controls suit cold, wet hands, and routine tasks take seconds. DECO PLANNER (PREMIUM) The one tool you pay for. - Multi-level profiles with automatic gas switching and unlimited segments - CCR: depth-keyed setpoint schedules, diluent switches during deco, and a full open-circuit bailout from any point in the dive - Stop times to the second (MM'SS"), or rounded to the minute or 30 seconds; the table always matches the engine - PPO₂ caps per gas by O₂ content (lean, mid, rich bands), so each gas switches in where its PPO₂ allows - Contingencies: deeper, longer, lost gas, or build your own - Per-stop PPO₂, CNS% and OTU, gas density, and consumption per cylinder with reserve warnings - Oxygen breaks on long O₂ stops - Repetitive dives with tissue loading carried across the surface interval - Share by QR code or link; every setting travels with the plan - Export deco tables and printable slate images - Compare plan variants side by side with graph overlays ELEVEN FREE TOOLS No ads, nothing behind a sign-up. - Best Mix / MOD: nitrox and trimix, helium chosen by END, with oxygen-narcotic and density limits - Gas Analyzer: EAD, PPO₂, END, and gas density with color-coded warnings - Gas Usage: multi-level consumption, rule of thirds or sixths - SRMV / SAC: your real breathing rate from a logged dive, doubles and sidemount included - Buoyancy & Weight: weighting from suit, body, gear, and water type, with lift and overweighting advisories - Gas Blender: partial-pressure and continuous blending with real-gas corrections and expected analyzer readings - Checklists: build your own pre-dive routines, with timers that survive closing the app - Mix Result, Unit Converter, and more - Cylinders entered the way you name them: 80 cu ft at 3000 psi in imperial, litres in metric REFERENCE & LEARNING - 90+ illustrated, searchable dive signals - 35+ cylinder specifications from real manufacturer data - Tutorials on gas physics, decompression theory, and trimix - Tap any result for what it means and why it matters CERTIFICATION WALLET 25+ agencies, 190+ certifications, and a diver profile with insurance and emergency contacts. BUILT FOR THE BOAT - Fully offline, on phones and tablets - Exact decimal math in every gas number - Seven languages: English, German, Turkish, Swedish, Russian, Polish, Simplified Chinese - Light, dark, and automatic themes No ads. No account. Your dive data stays on your device, and the optional usage analytics can be switched off in Settings. Dive Kit helps you plan and check your numbers. It does not replace training, certification, or your own judgment in the water. Analyze your gas, dive within your limits, and plan conservatively. PRICING The Deco Planner is the only paid tool: a one-time lifetime purchase or a subscription. Everything else is free, for everyone. Built by a technical diver, shaped by recreational, trimix, and rebreather divers, and instructors. Privacy Policy: https://divekit.app/privacy-policy/ Terms of Service: https://divekit.app/terms/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/