App is a tool to manage in a billiard club such as billiard table , player , staff and income. User use the admin account to login ( username : admin , password : 12345 ). After login , start & End time admin should change password. Admin features : _ manage staff _ manage price _ manage billiard table _ manage food , drinks _ view revenue report _ search revenue _ create and manage promotion After creating a staff , staff can login. Staff features: _ open table when user want to play. _ change table. _ charge.