SharePoint Store includes many inbuild apps, by using these apps you can customize your list and libraries without making any custom development.
How to use SharePoint Apps
- Go to Settings -> Add an app
- In the Site contents page, click on the SharePoint Store link which is displayed on the left sidebar
- It will be open the SharePoint Store Apps page
- Here you have to select the app what you would like to install
- After selecting the App, click on the ADD IT button, it will show the trusted confirmation. You have to click on the Trust it buttons to add it
- It will be added to “Your Apps” area
- Now user can use this custom app in their SharePoint site