Apple Watch Ultra dive log: from Apple Health to a logbook

1. Record the dive

1. Dive with the Depth app or Oceanic+ on your Apple Watch Ultra, the two apps the Loggerfish import screen names. The dive is saved in Apple Health as a diving workout.
2. There is nothing to export or download: the dives stay in Apple Health.

Reading Apple Health needs the Loggerfish iPhone app and iOS 17 or later. The web app at app.loggerfish.com cannot read it.

2. Import into Loggerfish

1. Open the Loggerfish iPhone app.
2. Open More, then Import. Under Apple Health, press “Read dives from Health”.
3. Allow access when iOS asks. Loggerfish asks to read workouts, depth and water temperature, and asks to write nothing.
4. Read the preview. It counts the dives that are new, the ones already in your log and the ones that differ. Nothing has been saved yet.
5. Press Import.

What comes across

• Each dive’s date, start time and length, the maximum and average depth, and the water temperature, where Health has them.
• Sessions shorter than five minutes are left out as breath-hold rather than scuba. The preview says how many.
• No site names, because Health has none. A dive that matches one already in your log takes its site; any other comes in without a site, for you to add afterwards.
• Nothing is written back to Apple Health unless you switch on Save to Apple Health in Settings.

What does not come across

• The depth profile, gases and cylinders: Health hands over a maximum and an average depth, not the profile.
• If the preview finds no dives although you have some, check that Loggerfish is allowed in Settings › Health: iOS does not tell an app whether access was refused.

Where this comes from

This page describes the Loggerfish iPhone app itself: what it asks Apple Health for and what it keeps.