The **HP app** is an all-in-one application that combines features from the former HP Smart and myHP apps, designed for managing HP printers, laptops, and tech accessories. It allows users to set up, print, scan, get tech support, and receive personalized recommendations on multiple platforms including iOS, Android, macOS, and Windows PCs[1][2][3].

Key features and details include:

– **Compatibility:** Available for download from Apple App Store (iOS, macOS), Google Play Store (Android), and pre-installed on Windows 10/11 HP PCs where auto-updates keep it current[1].

– **Functions:** Print and scan capabilities for HP printers on iOS, macOS, and Android; Windows users can continue printing/scanning via the HP Smart app for now, with these features coming soon to the HP app on Windows[1].

– **Setup and Device Management:** Provides guided setup for new devices, easy management of printer ink levels, settings, and the ability to discover compatible HP products[2][3].

– **Support:** Includes live chat, call support, and troubleshooting integrated in-app, expanding support to HP laptops, desktops, pens, docks, and more, not just printers[2][3].

– **Transition Note:** The HP Smart app is no longer available for download on iOS and Android but remains supported on Windows. Users are encouraged to switch to the HP app for a streamlined experience[1].

For installation, users simply download the HP app from their respective app stores; Windows HP PC users typically have it pre-installed[4]. The app is updated frequently to improve functionality and expand device support[1][2].

In summary, the HP app is a unified solution that replaces HP Smart and myHP apps to simplify printing, scanning, device setup, and support for HP products across major operating systems[1][2][3].