When you think of installing apps, then there are probably two things that come to mind. The first is having to visit a website to download Windows software, being uncertain if it might be genuine or if it might have malware in it and installing it on your PC using an installer that dates all the way back to the early days of Windows. Indeed, many installers still ask if you want to add an icon to the Quick Launch bar which was retired with Windows XP in 2009.
The other way is to open the Apple iOS Store ...