PowerApps is a service that lets you build business apps that run in a browser or on a phone or tablet, with no previous coding experience being required. PowerApps combines visual drag-and-drop concepts from PowerPoint with Excel-like expressions for logic and working with data.
If you're new to app building, PowerApps provides templates and sample data that you can use to quickly build an app. Once you have it built, make changes and customize the app to meet your individual needs.
For those with some previous experience, you can build an App from scratch and take advantage of the advanced functionality.
For additional information concerning Apps, such as creating, using and managing, visit the Introduction to PowerApps site managed by Microsoft