What is the Apple application used for downloading apps onto devices?

The Apple application used for downloading apps onto devices is the App Store. This platform serves as a digital distribution service for iOS and iPadOS applications, allowing users to easily find, download, and install applications on their Apple devices such as iPhones and iPads. The App Store provides a wide variety of apps ranging from games to productivity tools, enabling users to personalize their device experience and access a vast array of functionalities.

The App Store is specifically designed for Apple's ecosystem and integrates with iTunes and Apple's other services, providing a seamless user experience for managing software on Apple devices. It also includes features like app ratings, reviews, and updates, contributing to informed decisions by users about which apps to download.

In contrast, other options serve different platforms or functions. The Google Play Store is for Android devices, the Microsoft Store is for Windows devices, and iCloud is primarily a cloud storage service for Apple users, not an app marketplace. Thus, the designation of the App Store as the correct answer aligns directly with its purpose and functionality within the Apple ecosystem.