def build(self):
"""Builds the app when the app is run"""
## Define the screen manager (base of the app) ##
sm = ScreenManager(transition = WipeTransition())
## Add screens to the screen manager ##
sm.startup=StartUpScreen(sm,name='startup')
sm.add_widget(sm.startup)
sm.login=LogInScreen(sm,name='login')
sm.add_widget(sm.login)
sm.newuser=NewUserScreen(sm,name='newuser')
sm.add_widget(sm.newuser)
sm.tabs=TabsScreen(sm,name='tabs')
sm.add_widget(sm.tabs)
return sm
