Easy!Appointments supports the addition of custom translations in order to display the user interface into many languages and therefore be more user friendly. This page will guide you through the addition of a new translation and the configuration of the application. You can also modify or even set the default translation for the application.
Manage Translations Guide: https://code.google.com/p/easy-appointments/wiki/ManageTranslations
Easy!AppointmentsGuideLocalizeTranslations