Kalank vs mvPlan

Kalank is the next-generation dive logbook: record, import, book and share all your underwater activities: scuba diving, snorkeling, freediving... YOUR LOGBOOK, ALWAYS UP TO DATE Log every dive in seconds: location, depth, duration, conditions, gear… Your dives are numbered, organized and available anytime, even offline on the boat. IMPORT FROM YOUR DIVE COMPUTER Connect your dive computer via Bluetooth or import a file: your dives land in your logbook automatically, with all their data. No more manual entry. BOOK YOUR DIVES IN A FEW TAPS Find a dive center, pick your trip, course or gear, and book directly from the app — for yourself or for someone else. CATALOG YOUR SIGHTINGS Fish, turtles, nudibranchs… Record the species you encounter on every dive and build your own underwater encyclopedia. SHARE YOUR ADVENTURES Find your dive buddies, follow their trips and keep your passion alive beyond the water. Whether you're a beginner in training or an experienced diver, Kalank is with you before, during and after every dive. Download Kalank and dive into the adventure.

Plan your dives with confidence. mvPlan is a full-featured decompression planner for recreational and technical divers, built on the proven Buhlmann ZHL-16B and ZHL-16C algorithms with gradient factor conservatism. OPEN CIRCUIT & CLOSED CIRCUIT Plan dives on standard open circuit or CCR rebreathers with fixed or dynamic setpoints, multiple diluents, and full bailout planning with stress gas consumption. ALL GAS MIXES Air, Nitrox, Trimix, Heliox, pure O2 -- use any combination with automatic MOD, END, EAD, gas density and ppO2 calculations. MULTI-LEVEL PROFILES Build complex dive profiles with multiple depth changes, gas switches, and diluent changes. mvPlan computes the optimal decompression schedule for the entire profile. SAFETY MONITORING Track CNS and OTU oxygen toxicity, narcosis exposure (END), gas density alerts, and isobaric counter-diffusion (ICD) risk. Configurable alerts keep you informed. GAS PLANNING Calculate required gas volumes for each mix with configurable RMV rates for bottom, deco, and stress phases. Tank capacity checks ensure you carry enough gas. BAILOUT PLANNING Full worst-case bailout calculations for CCR divers: configurable bailout delay, stress RMV, and independent bailout gas selection with complete decompression schedule. VISUAL DIVE PROFILE Interactive depth/time graph with ceiling overlay, gas change markers, and pinch-to-zoom. Tap any segment to inspect tissue saturation across all 16 compartments. PDF EXPORT & SHARING Generate print-ready dive tables with all parameters, deco schedule, and gas requirements. Share plans directly from your device. SAVE & ORGANIZE Save unlimited dive plans, import/export as JSON, rename and manage your plan library. FULLY CONFIGURABLE Gradient factors (with presets), ascent/descent rates, last stop depth, altitude compensation up to 4000m, salt/fresh water, metric or imperial units. 6 LANGUAGES English, French, German, Spanish, Italian, Polish. Dark and light themes for comfortable display in any conditions. Free and open source (GPL). No ads. No account required. No data collection.