Log. Learn. Plan.
From the first entry in your logbook to a multi-gas expedition plan, the details stay connected. What you record after one dive makes the next one easier to understand and better prepared.
01 / LOG
A complete record, not just a depth and a time
Keep the full story of every dive in a world-class dive log, with the detail to remain useful years later.
- Profiles, tanks, gases, and gas switches
- Sites, buddies, trips, and operators
- Conditions, ratings, notes, and tags
- Photos attached to dives, sites, and gear
- Equipment history and service reminders
- Statistics and insights across your logbook
02 / LEARN
A planner that learns
Your own dives improve gas planning, buoyancy estimation, and thermal planning for the dives ahead.
- Gas planning based on your measured SAC
- Buoyancy and weighting predictions from your gear
- Thermal guidance learned from what kept you warm
- Repetitive tissue loading from recent dives and plans
03 / PLAN
Serious planning at every level
Start with a clear recreational plan, then go as deep as the dive requires.
- Bühlmann decompression with gradient factors
- Recreational, Technical, and DIR modes
- Nitrox, trimix, SCR, and CCR support
- Lost-gas and deeper-or-longer contingencies
- Gas requirements for individual divers and teams
- Altitude, water type, and salinity accounted for
04 / CONDITIONS
Know what the water will be doing
Bring the environment into the plan, then preserve the conditions that actually happened with the dive.
- Weather forecasts for the dive site
- NOAA tides and worldwide tide predictions
- Tide curves for planning around slack water
- Conditions history on logged dives
05 / EXPLORE
Remember where—and what—you found
Build a geographic and natural-history record alongside the dive itself.
- Thousands of dive sites, plus your own
- Maps, time zones, and site condition history
- Marine life sightings tied to dives and places
- Species lookups from iNaturalist, WoRMS, and EOL
06 / CONNECT
Your computer, your history, your data
Start with the records you already have, add new dives straight from your computer, match each recording to the dive you already wrote up, and keep a portable copy whenever you want one.
- Bluetooth downloads from all major dive-computer brands
- Apple Watch Ultra dives through Apple Health
- Recordings matched to the dives you logged by hand, with a preview before anything merges
- Dive Log, Diving Log, and Subsurface imports
- Shearwater Cloud, Suunto DM3/DM4/DM5, and Garmin FIT imports
- divelogs.de, JDiveLog, Seac Sync, Seabear, Poseidon MkVI, Divesoft, and OSTC files
- Full-fidelity UDDF and CSV export, plus DAN DL7
07 / CONVERSE
Work with an AI assistant
The built-in MCP server on Mac lets Claude, ChatGPT, or another MCP client work with your logbook in conversation.
- Search and summarize your dives
- Update logbook records
- Explore patterns and plan future dives
08 / EVERYWHERE
One logbook across your devices
Native apps keep your diving record close without locking it into a proprietary dead end.
- iPhone, iPad, and a real native Mac app
- iCloud sync across your devices
- Available in 28 languages
- Local-first storage and standard exports