We are building the dive computer for Apple Watch Ultra.
One instrument for the dive you are on and the dives ahead — a safety-stop timer on your wrist, a portable logbook, and a planning companion on the web. Built in the open, shipped honestly.
Where the program stands
What you get today
Timer-first, on your wrist
A configurable safety-stop timer with haptic and visual alerts, designed for the tempo of a real dive. This is the beta's core, and it works now.
A logbook you own
Record your dives and keep them portable — your log is your data, exportable and yours to move. No lock-in.
Plan before you splash
The web planner lets you sketch a dive from your browser — no install required — so the plan is set before you reach the water.
The ambition, stated plainly
Our aim is a genuine recreational dive computer on hardware most divers already own. Hardware depth logging is in active development and depends on Apple platform capability we do not yet control — so we do not claim it as shipped. We build toward it in the open and tell you exactly where we are.
DiveOne is in beta and is not a certified dive computer. Do not rely on it as your primary instrument or life-support device. Always dive with a certified computer and within your training.
Come build it with us.
Join the beta, try the planner, and help shape the instrument.