ReefScan vs Deep Frontier Dive Tools

ReefScan for iOS collects images and depth map data for underwater features such as reefs, coral, and wrecks. This data can then be used with the MacOS companion app ReefBuild to create a 3-D model. Very fast and accurate scanning. Also works above water and can be used with other photogrammetry applications besides ReefBuild.

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.