A dive log on the watch you already own.
DiveOne records your dive on a supported Apple Watch (Ultra, or Series 10 and later) and turns it into a logbook entry you can read at a glance. No extra hardware to buy, no separate device to charge.
How logging works
Three steps, and none of them depend on having a signal at sea.
Dive
The watch records depth to 6 m, dive time, and water temperature using its built-in sensors. Everything is recorded offline, with no connection needed underwater or on the boat.
Surface
After surfacing, the dive moves to your iPhone when the two are connected. If the transfer fails, the watch keeps the dive and tries again.
Review
Each dive becomes a journal entry: depth profile, duration, water temperature, and a dive site you can pin on a map.
What gets recorded
Honest limits
A logbook you trust starts with limits you can see.
Supports Apple Watch Series 10 and later and every Apple Watch Ultra model, including Ultra 3.
DiveOne 1.0.2 records depth to 6 m. Deeper recording needs an Apple entitlement that has not been granted.
DiveOne is not a dive computer and gives no decompression, ascent, or stop guidance.
Always dive with a primary dive computer and within your training and certification limits.
More for divers
DiveOne is a recreational dive tracking and logbook tool. It is not a dive computer and does not replace professional diving equipment. Always dive within your training and certification limits.
DiveOne 1.0.2 is available.
Download the current App Store release and check the status page for verified limits.