You can. The form at the top of the page saves to this device, so you can jot down a dive on the boat before the details fade. Treat it as a notepad rather than a logbook: the free account is what keeps your dives safe in the cloud, on every device, with the dashboard and everything else. When you sign up, anything you logged here comes along automatically.

Unlimited dives stored in the cloud, every field and customization option, per-field units, the creature picker, the full dashboard, and public dive sharing. There's no dive limit and no trial period.

Both, per field. Each measurement has its own unit toggle like a dive computer, and it remembers your choice. Values are stored in metric underneath, so switching units never loses precision and never rewrites your data.

Yes, on the paid plan. Turn on Offline mode in Settings and the app keeps a copy of itself on your phone, so it opens on a boat with no bars. Dives you log are saved to the device and go up to your logbook on their own the moment you're back in range. Log as many in a row as you like. Photos are the one thing that has to wait for a connection; add those once the dive has synced.

You keep every dive. Your logbook drops back to the free plan, your photos stay viewable, and the full JSON backup is free on every plan, so you can take a complete copy with you before or after canceling. We don't hold your dives hostage.

Yes, and it's free on every plan. Import from CSV, XLSX, UDDF, Subsurface, or a DAN DL7 file. The import wizard works out the format from the file itself and shows you a validated preview before anything is saved, so you can remap any column it guesses wrong.

Private by default. Individual dives can be published to a public page one at a time, and you can make them private again whenever you want.

The logbook is built for your phone's browser first: big touch targets, quick pickers, forms that work with wet hands. Add it to your home screen and it opens full-screen like an app, and on the paid plan, Offline mode keeps it working far from any signal.