A calm dive tracking tool for your wrist
DiveOne is a recreational dive tracking app for Apple Watch Ultra. It records your dives offline, stores data on your device, and stays out of the way.
What DiveOne is
- A recreational dive tracking tool
- An offline-first dive journal for Apple Watch Ultra
- A privacy-first app — your data stays on your device
- A simple, focused tool for logging dives
What DiveOne is not
- Not a certified dive computer (EN 13319 or equivalent)
- Not a replacement for professional diving equipment
- Not a decompression planning tool
Three disciplines
Each mode is tailored for a specific type of recreational diving.
Scuba
Track depth, time, temperature, and safety stops during recreational scuba dives.
In developmentFreedive
Record breath-hold dives with depth, time, and surface interval tracking.
In developmentSnorkel
Log snorkel sessions with water temperature, duration, and location.
In developmentKey principles
Works without internet
All dive data is recorded locally. No cellular or WiFi needed underwater.
Your data, your device
No mandatory cloud accounts. Data stays on your iPhone unless you choose to export it.
Automatic dive journal
Every dive is logged automatically: depth profile, duration, temperature, GPS entry point.
Apple Health integration
Dive data syncs with HealthKit so it appears alongside your other fitness activities.