Need an interactive UI for a app

Hello, I have a concept and artwork
I need an interactive UI to show developers how I want this app to work. Like a demo app.

We are building a smart fridge I have how I want it to look I just need a demo app for planning purposes.

3 demo UI
1 device app IOT UI
1 mobile app UI
1 backend desktop App
1 delivery app
Website design

Then we have the other bits
1 stock management UI
1 order fulfillment app