# Deep Frontier Dive Tools

> Trimix & CCR deco planning

Canonical page: [https://chrome-stats.com/d/id6787112416](https://chrome-stats.com/d/id6787112416)

## Overview

- **ID:** `id6787112416`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Christoph Heinrich Fischer
- **Category:** Utilities
- **Version:** 1.1
- **Last updated:** 2026-09-07
- **First published:** 2026-07-20
- **Size:** 2.69 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/deep-frontier-dive-tools/id6787112416)
- **Website:** [https://deepfrontier.co](https://deepfrontier.co/)
- **Privacy policy:** [https://deepfrontier.co/privacy.html](https://deepfrontier.co/privacy.html)

## Description

Now speaking your language! (If that happens to be German or Italian.) Plus: sharper multilevel decompression!

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.

## Rankings

- #1,413,702 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6787112416)