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DiveOne vs. Traditional Dive Computer
This is not a comparison where one wins. A certified dive computer and DiveOne do fundamentally different things. Understanding the difference is critical.
What a traditional dive computer does
A dive computer calculates no-decompression limits, tracks nitrogen loading, monitors ascent rates, handles gas mix switching, and provides real-time safety warnings. It is life-support equipment and your primary underwater safety tool. Its depth and time readings may be tested to EN 13319, the depth-gauge standard; that standard does not cover decompression information.
What DiveOne does
DiveOne reads the Apple Watch depth gauge and temperature sensor. It records a timestamped depth profile to 6 m, creates an automatic dive journal, lets you pin the dive site on a map, and exports a CSV summary. Recording works offline on the watch, and an account is optional.
Where they overlap
Both show you current depth and dive time. Both log water temperature. Both give you a post-dive record. The overlap ends here. DiveOne does not compute anything related to gas physics, tissue loading, or decompression obligations.
When to use which
Always dive with your certified dive computer as primary. Use DiveOne as a secondary logging companion — a digital dive journal that writes itself. If you have to choose between the two, choose the dive computer. DiveOne is useful. A dive computer is essential.
DiveOne 1.0.2 is available.
Download the current App Store release and check the status page for verified limits.