Do you know of any topic to create a React Native application to create an application for the employees of my company to sign?

Hello, I am trying to create an application with React Native so that employees of my company can sign on every work shift.
I need the theme to be customized, so that the end user can choose the language of the application.
That the registered users, when they start their work shift and start at the beginning, register in a base of my company, in order to have a record of when the employees sign at the beginning of the working day.
Is there a React Native theme with which I can achieve this?
Thank you.