building countdown timer

[sohail9689]

I want to create an app countdown timer one of my client requirement. I follow all the steps of Build a Shopify app with Node and React where I learn some basic concepts like retrieve data from graghql (query/mutation). My question is what is the next step for my app to save countdown timer for my selected products and display on front below the add to cart button. Is there any guide/steps to follow to build this type of app. 

[Bobby_from_Bold]

Hey Sohail,

Are you still trying to figure this out?