Customers pick bedrooms and extras and see the price. This one is an example we made.
Fresh Start lists bedrooms and extras in the app. A customer builds the clean, sees the price and sends it. This one is an example we made.

They quote or invoice from the same app. No web inbox.
They send what they picked. You can refine the price in the app before you invoice.
No. They use the web page. Only the business needs the app.
Get the app. Add your rooms and extras. Make your page live and share the link.