First, choose what you're building, in your own words, the way you'd tell Claude Code. Then describe your business the way you'd tell a friend. The Coach will ask until everything a builder needs is there.
An app here runs in the phone's or computer's web browser and can be saved to the home screen. It isn't an App Store download, and it can't send emails.
"Build me a website (website or app) for my dog walking business for busy professionals in Austin (who). Visitors should be able to see prices and request a first walk (what). Friendly and trustworthy — like rover.com but simpler, greens and white (good). It works when someone can send a request and see a thank-you (know)."