A dive logbook for Apple Watch.
One app. Three modes. Built for Apple Watch Ultra and Apple Watch Series 10 or later, using the watch depth and water temperature sensors.
What DiveOne is
- A recreational depth and time recorder and logbook.
- An offline-first logger for scuba, freedive, and snorkel.
- A private journal that stays on your devices.
- A focused tool designed for visible clarity underwater.
What DiveOne is NOT
- A dive computer.
- A substitute for certified dive training.
- A data-tracking platform that sells your activity.
Built for every way you dive.
Scuba tracking.
The core recreational dive logging experience for supported Apple Watch models. Focused on depth to 6 m, time, and visible status.
Breath-hold tracking.
A focused freedive experience that prioritizes surface intervals, heart rate, and clear depth history.
Surface tracking.
For casual sessions: how long you were in, how warm the water was, and how deep you went, up to 6 m.
Why DiveOne
Offline-first
Log your sessions even without cellular or Wi-Fi. Dives move to your iPhone after you surface.
Local-first
Recording works without an account. Your logbook stays on your iPhone unless you sign in on version 1.0.1.
Apple Health
With your permission, completed Watch dives are saved to Apple Health as underwater workouts.
Readable at a glance
Large numerals for depth and time on supported Apple Watch models.
DiveOne 1.0.2 is available.
Download the current App Store release and check the status page for verified limits.