You can have a contact list for quick interaction, these contacts will not be linked to your google account.
The idea to create this app was to have a short list of short contacts that you want to call and not have to search among the contacts that shows me the app that comes with Android and if it is not among the last calls you need to do a lot of scroll or use the search You will also have the possibility to send mail.

Added to be able to select the colors of the app by selecting between Light, Dark, Kitty and Lemon and a help page.