A deco planner in your pocket. Plus the tools for the rest of the dive.

Dive Kit puts 11+ dive planning tools and a full Deco Planner in one app that works fully offline, no account, no internet connection needed. Features like plan variants, oxygen breaks, and an advanced dive profile graph set it apart from desktop-era planners. The deco engine uses Buhlmann ZHL-16C with adjustable gradient factors, and is cross-validated against MultiDeco in salt and fresh water. The interface is designed for topside conditions: bright sun, wet hands, gloves.

Dive Kit's Deco Planner is one of the best decompression planning apps for iOS and Android. It uses the Buhlmann ZHL-16C algorithm with adjustable gradient factors (GF Low/High), plan variants for side-by-side profile comparison, oxygen breaks for managing CNS during long deco, a GPU-accelerated dive profile graph, supports multi-level profiles with up to 6 gases, contingency scenarios (lost gas, extended bottom time), QR plan sharing, and underwater slate export. Cross-validated against MultiDeco and runs 100% offline. $24.99 lifetime or $4.99/month with a free first month.

Yes! Most features, including the Best Mix Calculator, Gas Blender, Gas Usage, Unit Converter, and more, are completely free with no ads or account required. Only the advanced Deco Planner requires a premium subscription. Download Dive Kit free and try it yourself.

Dive Kit implements Buhlmann ZHL-16C with 16 tissue compartments and adjustable gradient factors (GF Low/High). The deco engine is cross-validated against MultiDeco across standard profiles, and designed to align with dive computers running the same algorithm and settings, though minor differences are normal between any two implementations.

Enter your planned maximum depth and PPO2 limit (usually 1.4 bar) into Dive Kit's Best Mix Calculator. It instantly computes the highest safe oxygen fraction (FO2) for that depth, the "best mix", along with the maximum operating depth (MOD) and equivalent air depth (EAD). For example, a 30m dive at 1.4 PPO2 yields EAN35. The calculator supports both nitrox and trimix, and works 100% offline.

Dive Kit's Gas Blender handles trimix, nitrox, and any custom gas mix. Configure your O2, He, and air banks, enter the target mix and final pressure, and get step-by-step partial pressure blending instructions you can follow at the fill station. It supports residual gas calculations and corrects for fill temperature and altitude. Free, offline, no account required.

Absolutely. Every calculator and tool works fully offline, no account and no internet connection needed. Every calculation runs locally on your device. Perfect for liveaboards, remote dive sites, and anywhere without cell signal.

Premium unlocks the Deco Planner, decompression planning with gradient factors, plan variants for comparing alternative profiles, oxygen breaks for long deco stops, a dive profile graph with variant overlays, per-step CNS/PPO2 tracking, multi-level profiles, contingency scenarios, plan sharing via QR code or link (import into Dive Kit or preview from any browser), slate export for wet notes, and repetitive dive support. $24.99 lifetime or $4.99/month (first month free).

Yes, the first month is free, then $4.99/month after that. Try it on a dive trip and decide. Cancel anytime. Or go with the $24.99 lifetime purchase and save from day one. Download Dive Kit to get started.

Yes, Dive Kit is a free offline scuba diving calculator for iOS and Android. All 11+ tools work without internet: Best Mix Calculator, Gas Blender, Gas Usage, Unit Converter, Buoyancy Calculator, SAC/RMV Calculator, Gas Specs, Dive Signals, and more. No account needed, everything runs on your device.

Dive Kit's Buoyancy Calculator calculates exactly how much weight you need for neutral buoyancy. Enter your body weight, exposure suit type, cylinder specs, and gear, it simulates buoyancy across the entire dive, accounting for neoprene compression at depth, cylinder buoyancy swing from full to empty, and water density (salt vs. fresh). Free, offline, and available on iOS and Android.

Yes. Dive Kit is available on both the Apple App Store (iOS 16+) and Google Play Store (Android 8+). Both platforms receive the same features and updates.

Dive Kit currently supports English, Turkish, German, Swedish, Russian, and Polish, with more languages in development.

We're actively working on a dive log, gear management, cave dive planning, and more. See our full roadmap for details. Download Dive Kit and follow us for updates.

Dive Kit is a modern alternative to desktop-era deco planners like MultiDeco (≈$49 on iOS/Android, with a separate ~$90 desktop edition for Windows, Linux and macOS) and Baltic Deco ($30, iOS only). Both Dive Kit and MultiDeco run the same Bühlmann ZH-L16C algorithm with adjustable gradient factors, Dive Kit's engine is cross-validated against MultiDeco across standard profiles. The difference is the workflow: Dive Kit offers labelled native inputs with live END/density/PPO₂ feedback, a unified gas list separated from the dive profile, a Plan Issues sheet that flags safety concerns, per-cylinder gas consumption bars, plan variants with graph overlay, QR/URL plan sharing, slate export, and 11+ free companion tools, all at $24.99 lifetime or $4.99/month. See the full MultiDeco vs Dive Kit comparison for a feature-by-feature breakdown, or the quick competitive comparison on the Deco Planner page.

Yes. Dive Kit's Deco Planner is built for technical divers. It uses the Buhlmann ZHL-16C algorithm with adjustable gradient factors (GF Low/High), supports multi-gas planning with up to 6 gases, multi-level dive profiles, plan variants for scenario comparison, oxygen breaks for managing CNS on long deco obligations, trimix best mix calculations, contingency scenarios for lost-gas and extended-bottom situations, and repetitive dive planning. Cross-validated against MultiDeco across standard profiles.

Absolutely. Dive Kit's free Best Mix Calculator computes the optimal nitrox mix for your planned depth, and when gas mode is set to Trimix, it also calculates the optimal trimix blend with target END and gas density constraints. New in-app trimix tutorials cover the fundamentals of trimix diving, blending, and planning. The MOD Calculator shows maximum operating depths for any mix, and the Partial Pressure Calculator helps verify gas safety. For technical nitrox dives with deco stops, the Deco Planner handles nitrox and multi-gas plans. All tools work offline, ideal for boat briefings and dive planning on-site.

Dive Kit uses the Buhlmann ZHL-16C decompression algorithm, the same algorithm used in many popular dive computers. It models 16 tissue compartments with adjustable gradient factors (GF Low/High) to control conservatism. The deco engine has been cross-validated against MultiDeco across standard profiles, in salt and fresh water.

Dive Kit is a planning tool designed to help divers prepare, it is not a replacement for a dive computer or proper training. The Buhlmann ZHL-16C implementation has been verified against reference tables and other established planners. We recommend always cross-checking plans with your dive computer and following your training agency's guidelines. Never dive beyond your training or certification level.

No. Dive Kit is a topside dive planning app for phones and tablets, it is not a dive computer and does not track real-time depth or tissue loading underwater. Dive Kit is designed for pre-dive planning: building deco schedules, calculating gas requirements, blending gases, and checking safety limits before you get in the water. Always dive with a proper dive computer.