Made on
Tilda
OrcaLog is the retro-futuristic dive computer built for Apple Watch. Real-time decompression, gas analytics, and a digital logbook — engineered to work at any depth, with zero signal.
Every feature in OrcaLog is designed around one constraint: it has to work flawlessly at 30 metres, with gloves on, in zero signal, at 14°C.
The gold-standard decompression algorithm, running entirely on-device. Input depth, gas mix, and surface interval — get NDL and mandatory stops instantly.
Pre-diveAuto-fetch dive profiles from Suunto, Garmin, and Shearwater computers via BLE. Universal UDDF format support. No cables, no manual entry.
Post-diveAutomatic Surface Air Consumption calculation from depth + tank data. Visual trend lines over 20+ dives reveal your breathing efficiency gains.
AnalyticsReal-time ascent rate monitoring with haptic and visual alerts above 9 m/min. Automatic 3-minute safety stop countdown triggers at exactly 5 metres.
In-waterSwitch breathing gases mid-dive — from bottom gas to deco mix — and watch OrcaLog recalculate your decompression ceiling in real time.
In-waterCalculators, logs, certification copies — every function works with zero cell signal. Dive boats don't have WiFi. OrcaLog doesn't need it.
ArchitectureOne-tap on-device filter removes the blue-green cast from underwater photos. Restores natural reds and oranges — no editing app required.
Post-diveInstructors and dive guides scan a generated QR code screen-to-screen to digitally co-sign your logbook entry. No internet, no app pairing needed.
SocialTouchscreens fail underwater. OrcaLog's interface is fully navigable via crown and side button — massive typography, high-contrast color-coded data blocks.
In-waterThe alert hierarchy is engineered around underwater physics. Cyan survives to any depth. Chartreuse means safe. Yellow means act now. Magenta means stop — full haptic lock.
The ZHL-16C planner on my wrist before a dive is something I didn't know I needed. Calculated my NDL for a Nitrox 32 dive in seconds, offline, on the boat. Unreal.
As a tech diver, the multi-gas engine is what sold me. I switched from EAN32 to 50% deco mix at depth and watched the ceiling recalculate live. That's serious software.
My SAC rate has improved 22% over two months because I can actually see the trend. The bar chart showing my last 5 dives is the most motivating thing in the app.
OrcaLog is free to download. Dive planning, immersion mode, and your first 10 logs are completely free. Pro unlocks unlimited logs, SAC analytics, and multi-gas.