Safety
A logbook, not a computer.
DiveOne records depth and time for your logbook. It is not a dive computer and does not replace your primary instrument.
DiveOne is not a dive computer or life-support device. It does not calculate decompression. Always dive within your training limits and use a primary dive computer.
What DiveOne does
- Depth and time logging to 6 m. Long dives are saved at one point every 2 s (5 s for snorkel).
- Clear, visible status indicators during your dive.
- Haptic alerts only for low battery, a lost depth sensor, and nearing or reaching the 6 m limit.
- Dives move from the watch to your iPhone after the dive.
What DiveOne does not do
- Decompression calculation or planning.
- Gas management or air integration.
- Blackout detection or emergency rescue features.
- GPS tracking. DiveOne does not record GPS positions during a dive.
What happens if
Battery dies
Watch powers off. Surface safely using your primary computer.
App crashes
The watch saves a checkpoint every 5 seconds. Data up to the last checkpoint is kept.
Transfer to iPhone fails
The dive stays on the watch and the transfer is tried again.
New phone
Restore a DiveOne JSON backup, or import supported dives from Apple Health. The logbook does not move by itself.
Safety recommendations
1
Always dive with a primary dive computer.
2
Start every dive day with at least 80% battery.
3
Review your dive logs on land, not during a dive.
4
Keep your software updated for the latest safety optimizations.
DiveOne 1.0.2 is available.
Download the current App Store release and check the status page for verified limits.