Power Apps is an application that lets your create custom apps! Need something that's a cross between Planner, SharePoint, and Forms? Need an app that is just a tad more customized to your specific organization needs? Power apps lets you create your own. This app lets your organization take data from multiple connectors to build apps that present and record information in the way that you need.
Disclaimers: Not all applications may come with your current Microsoft license. Some applications are additional add-ins. Applications may be restricted and/or non-accessible per your organization. Any use of an application must follow your organization's data and usage policy. Contact your organization's management for more information.