Dive logging built for CCR.

Anchorline imports your Shearwater over Bluetooth and shows you what the log is really saying: cell health, scrubber time, PPO₂ against setpoint.

The dive list: closed-circuit dives with depth, runtime and gradient factors, each with a small profile.
A dive's detail page: max depth, runtime and average depth above the profile with PPO₂ and setpoint.
An oxygen cell's history: peak millivolts per dive against baseline, watch and replace lines.

Phone and tablet

  • iOS

    Coming to the App Store

  • Android

    Coming to Google Play

Desktop

What it does today

The profile, with PPO₂ against setpoint and all three cells

Depth and PPO₂ share one timeline. Each cell is drawn against the setpoint, so you can see where a cell lags or drifts.

The dive profile with PPO₂ against setpoint and the three cells drawn separately.

Deco replay with surface GF, CNS and OTU

Step through the dive and read the ceiling, surface GF, CNS and OTU at any point. Ceiling and surface GF are replayed from the logged profile with your gradient factors; CNS and OTU follow the exposure the computer logged.

The profile with the GF99 and ceiling overlays, and the readouts for CNS, OTU and surface GF below it.

Cell voltage across dives

Each cell's millivolts at the surface and at the peak of the dive, plotted dive after dive, so a slow change in a cell shows over time.

mmV
0102030405060
020406080
0102030405060708090100110
min
Time
—
Depth
—
PPO₂
—
Setpoint
—
Cell 1
—
Cell 2
—
Cell 3
—
mVpeak mV
4620
9331
surface mV per dive, one cell, 104 dives

Scrubber sessions

Log when a canister was packed and how much dive time it has used. The app counts the minutes for you and shows what is left.

Scrubber sessions: a closed pack with its total hours and an active pack still counting, each with its start date and sorb type.

Gas density and END on the profile

Gas density and equivalent narcotic depth are drawn along the dive, so the deep part of a trimix dive can be checked at a glance.

The profile with gas density and equivalent narcotic depth drawn along the dive.

The blender and the planner

Work out a fill for a target mix, and check a gas and its limits before you dive. It is a gas tool, not a deco planner.

The blender: a trimix target, the helium, oxygen and air fills in bar, and the top-off gas.

Imports from Subsurface, so an existing logbook comes along.

Logs gas analyses from a Divesoft SOLO analyzer over USB.

Where it's going

  • nextCell health across a cell's lifetime
  • nextTwo-way sync with Subsurface Cloud
  • nextCloud sync across your devices
  • exploringOther dive computers
  • exploringA USB-to-Bluetooth bridge for the SOLO analyzer

Plans change; nothing here is a promise.

Free and paid

Free

  • The app
  • Importing from your Shearwater
  • Every analysis, cell health included

Paid

  • Cloud sync across devices
  • Attachments: photos and files on your dives
  • Two-way Subsurface sync

Prices follow once they are set in the app stores.

Supported dive computers

  • Predator
  • Petrel 1, 2 and 3
  • NERD and NERD 2
  • Perdix, Perdix AI and Perdix 2
  • Teric
  • Peregrine and Peregrine TX
  • Tern

Other manufacturers are not supported yet. The source will be open, so others can add their computer.