---
title: "Preferences"
description: "Set the appearance for this device, and the language and units stored on your account, including which of them currently changes anything."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.divelogic.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Preferences

import { AccountSetting } from "@/components/react/AccountScreens";

**Settings → Preferences** holds three settings. The first belongs to the
device you are looking at; the other two are saved to your account.

## Appearance

DiveLogic ships two themes: **Cabin**, the dark one, built for a dim liveaboard
cabin, and **Deck**, the light one, for a boat deck at 11 am with sun on the
screen. **System** follows the operating system's own light/dark setting,
**Light** pins the light theme regardless of it, and **Dark** pins the dark
theme. Dark is the default, not System.

The change applies immediately, and the note under the control says the rest:
**Applies to this device.** Each machine you sign in on keeps its own answer, so
a phone on deck and a laptop in a cabin can each be set correctly. In a browser
with private browsing on, the setting cannot be remembered at all and the app
opens in Dark every time.

## Language

English is the only language shipped. Press **Save** to commit it; the button
stays disabled until something changes.

## Units

Metric or Imperial, saved to your account and remembered, but nothing acts on it
yet. The control carries its own description in the app: "Saved to your account.
DiveLogic's planner and logs are metric-only today, so this choice doesn't
change any numbers shown in the app yet."

Setting Imperial does not convert a depth, pressure or volume anywhere in the
planner, the log or the schedule. It shares the **Save** button with Language.

## Next

- [Units](/reference/units) lists every unit the app uses.
- [Sync and offline](/account/sync) gives the general rule for what follows the
  account and what stays put.

Source: https://docs.divelogic.ai/account/preferences/index.mdx