Ascent Dive Log icon iPhone dive log for Shearwater computers

Every dive,
on the map.

Ascent pulls your dives off your Shearwater over Bluetooth and turns them into a map-first logbook. Depth profiles, gas and deco stats, gear, and certifications, all synced privately across your devices.

Join the TestFlight beta

Free during beta · iPhone · coming soon to the App Store

Everything in your logbook

From the moment you surface to your whole diving history, Ascent keeps it accurate and easy to browse.

Bluetooth download

Pull your dives straight from your Shearwater over Bluetooth. Works with the Perdix, Teric, Peregrine, and more. No cables, no desktop app.

Map-first logbook

Every dive is pinned to where you took it, so your logbook also maps out everywhere you've dived.

Full dive profiles

See each dive exactly as your computer recorded it. Depth over time, with temperature, NDL, gradient factor, and CNS overlaid.

Gas & deco at a glance

SAC and RMV, gradient factors, and nitrox mixes, all worked out for you on every dive.

Gear & service reminders

Track your kit and cylinders, with a reminder when a regulator or piece of gear is due for service.

Certifications

Keep every agency certification on hand, with card number, instructor, and dive shop all in one place.

Dive insurance

Store your dive insurance details and reach your provider's emergency hotline with a single tap.

Private iCloud sync

Your whole logbook syncs across your devices through your own private iCloud. No account, nothing on our servers.

Yours to keep

Import and export your full history as UDDF, with no lock-in. Switch logbooks whenever you want.

One-time Pro

Free for your first 20 dives. After that, unlock unlimited logging with a one-time purchase. No subscription, ever.

Join the beta

Ascent is in private beta on TestFlight. Leave your email and we'll send you an invite as spots open up.