Hi @Anajneya ,
PowerApps is a suite of apps, services, connectors and data platform that provides a rapid application development environment to build custom apps for your business needs. Using PowerApps, you can quickly build custom business apps that connect to your business data stored either in the underlying data platform (Common Data Service for Apps) or in various online and on-premises data sources (SharePoint, Excel, Office 365, Dynamics 365, SQL Server, and so on).
Power BI offers a set of mobile apps for iOS, Android, and Windows 10 mobile devices. In the mobile apps, you connect to and interact with your cloud and on-premises data.
More details about PowerApps:
https://docs.microsoft.com/en-us/powerapps/powerapps-overview
More details about PowerBI mobile app:
https://docs.microsoft.com/en-us/power-bi/consumer/mobile/mobile-apps-for-mobile-devices
Hope this can be helpful.
Best Regards.
Yumia
