# Account preference

Signed-in Users read and change their locale, main currency, units and reminder channels; the data region is set once and shown read-only.

The API gains `accountPreference.get` and `accountPreference.update` for the AutoFolio profile. The first read creates the User's row from the device locale (Portuguese → BRL, km, l, region br; German → EUR, km, l, region eu; anything else → USD, mi, gal, region us), once, even when two reads race. An update changes only the choices it names and refuses the data region, which moving is a support process.

- [Account preference](/docs/features/account-preference)