Premium Feature
Plan Your Deco Stops with Confidence
Buhlmann ZHL-16C with gradient factors, multi-level profiles, contingency planning, web-shareable plans, and slate export. Run your plan, cross-check it, take it underwater.
Premium feature. $24.99 lifetime or $4.99/mo (first month free).
Algorithm & Accuracy
Under the Hood
The math and physics behind the numbers, for divers who want to know.
Buhlmann ZHL-16C
The same 16-compartment decompression model used in Shearwater and Suunto dive computers. Your plans are designed to align with hardware running the same algorithm and gradient factors.
Arbitrary-Precision Arithmetic
Built on decimal.js to minimize floating-point rounding errors. Stop times are calculated with high precision rather than relying on standard floating-point math.
Van der Waals Real Gas Model
At depth and high pressures, gases don't behave ideally. DiveKit applies Van der Waals corrections so your gas calculations stay accurate where ideal gas assumptions break down.
Every Feature Tech Divers Need
Built for the workflow: plan, review, export, dive.
Multi-Level Planning
Plan complex multi-level profiles with automatic gas switching and optimized ascent schedules.
Contingency Scenarios
What if you go deeper? Stay longer? Lose a deco gas? Run worst-case scenarios and know your outs.
QR Code Sharing
Share dive plans via QR code or link. Your buddy can open the full plan in their app or preview in the browser.
Gradient Factors
Full control over GF Low and GF High for conservative to aggressive profiles tailored to your experience.
Slate Export
Export your dive plan to a clean slate format for underwater reference on a wrist slate or wet notes.
Unified Gas Pool
Define your gases once and use them across all dives in a session. No redundant configuration.
Repetitive Dives
Plan back-to-back dives with tissue saturation tracking between surface intervals.
Per-Dive Settings
Override defaults for individual dives without affecting your other planned dives or global configuration.
100% Offline
Every calculation runs locally on your device. Plan dives on the boat, at the dive site, or anywhere without signal.
Share Plans to Any Browser
Share your dive plan via QR code or link and your buddy can view it instantly in any browser — complete with dive profile, deco table, gas usage, and all contingency scenarios. No app install required.
- Full dive profile chart with ceiling shading
- All contingency scenarios — switchable in one tap
- Gas usage, warnings, and complete plan settings
- Works on any device — phone, tablet, or desktop
How DiveKit Compares
See how the Deco Planner stacks up against the competition.
Compared to other dive planning apps like MultiDeco ($49 lifetime), Baltic Deco ($30, iOS only), Subsurface (free, open source), and Divesoft App (free with Divesoft computer), DiveKit offers the most modern mobile experience with features like QR plan sharing, slate export, and contingency scenarios at $24.99 lifetime.
| Feature | DiveKit | MultiDeco | Baltic | Subsurface | Divesoft |
|---|---|---|---|---|---|
| Buhlmann ZHL-16C | Yes | Yes | Yes | Yes | Yes |
| Gradient Factors | Yes | Yes | Yes | Yes | Yes |
| VPM-B Algorithm | No | Yes | No | No | No |
| Multi-Level Dives | Yes | Yes | Yes | Yes | Yes |
| Multi-Gas Planning | Yes | Yes | Yes | Yes | Yes |
| Contingency Scenarios | Full | Limited | Limited | No | No |
| Repetitive Dive Planning | Yes | Yes | Yes | Yes | No |
| CCR Support | No | Yes | No | Yes | Yes |
| Buddy Plan Sharing | Yes | No | No | No | No |
| QR Plan Sharing | Yes | No | No | No | No |
| Slate Export | Yes | No | No | No | No |
| Per-Dive Settings | Yes | No | No | Yes | No |
| Modern Mobile UI | Yes | No | No | No | No |
| Free Tools Included | 10 tools | None | None | All free | None |
| Works Offline | Yes | Yes | Yes | Yes | Yes |
| Mobile App | iOS & Android | iOS & Android | iOS Only | iOS & Android | iOS & Android |
| Desktop App | No | No | No | Yes | No |
| Price | $24.99 lifetime | $49 lifetime | $30 lifetime | Free | Free* |
Comparison based on publicly available feature lists and pricing as of early 2026. Baltic is not available in the EU. *Divesoft App requires a Divesoft dive computer. Subsurface is free and open source.
Simple, Fair Pricing
All other DiveKit features are completely free.
Monthly
First month free, then $4.99/mo
Full Deco Planner access. First month free — try it on a dive trip and decide.
Get StartedLifetime
Less than 6 months of monthly
Every feature. Every update. Forever. One payment and it's yours.
Get StartedThe other 10 tools stay free. The Deco Planner is the only premium feature.
Roadmap
What's Coming Next
Active development based on real diver feedback. Here's what's next.
CCR Deco Planning
Closed-circuit rebreather decompression support with setpoint management.
2026Trimix Gas Blending
Full trimix blending support with helium fraction optimization.
2026Dive Log
Log your dives with smart suggestions based on your dive profiles and history.
2026Plan the Dive. Dive the Plan.
Download DiveKit free. Try the 11 tools, and upgrade to the Deco Planner when you're ready to plan decompression dives.