PowerApps is a new feature to create Apps quickly and with limited efforts. In this simple example I am going to create an App based on a custom list of SharePoint. List is as below

Idea is to create an App for users to approve or reject claims logged by users, so we have a simple list which stores description and amount. In the App Approver has option to reject or approve claims.
Now in new version of SharePoint Online User Interface you have the option to create an PowerApp from the list so we will use that. Click on PowerApps and Create an app. Pick a name for the App, we have chosen ClaimApp.

Once you click create, App creation will start a new window of browser will open. Note that now PowerApps can be created using browser based studio. Widows studio is still available which we will look later in other blog post.
This will create the basic App and show you in the web studio of PowerApp as below.

The studio has different elements on top, right and left. First you will see the Browsescreen1 in which elements can be selected. As you can see I have selected an element which is visible on right side.

You can take away elements as we have taken away all except Claims title, there are other screens for Edit as well which can be selected from left side. Here is a screen shot for Detail Screen and Edit Screen

As you can see all the useful screens are already created. This can be published as is to work for end users. The other options of the studio will be discussed in another post. Now let’s see it in action.
You can do a preview by using F5 or play button at top right. You can save the App from File menu and then run it from List view option


Click open and the App will open in a new tab.

PowerApps can be downloaded to mobiles and Windows 10 laptops. Once downloaded it works as a mobile App. The main PowerApps mobile App will show all available Apps for your organization and you can download to run required ones

Once downloaded it will work the same way as it was working the same way on web.
So this was a glimpse of PowerApps and how easy it is to create an App. Next we will explore studio more and perform customization.