Flutter-Firebase Basic Company Management App

Hello Everyone ,
I wanna create an App for a Company Management,
Basic Functions are,
Daily Cash Money giving,
Daily Casy Orders giving,
Employes Management with Time (Manuel Textfeld) and Montly Earn Calculate (Hour Preis x Worked Hour)
Order,
Checkout calculation,
Profit and Loss Calculation,(Earned Money - Paid Orders)
everything has to run with Google Firebase or PHP hosting.
Thanks for all offers!