I like that it's built in to macOS, but you can also download other apps from their website as well which are not natively supported by Apple. It doesn't have all of Photoshop capabilities or even some of them so if your looking at something more specific then maybe look elsewhere? The app works great when editing photos/videos though! Easily accessible with minimal learning curve. Editing pictures has never been easier than this software allows me too do just about anything i want without having to go through extra steps after downloading another application.