Adobe Lightroom is not one program but three. You could easily call it an ecosystem. At heart, it’s a tool for both organizing your photos and editing them. So how do you get it, what does it cost, and which version do you need?
An app for iOS or Android devices which works alongside the desktop Lightroom app to display images you’ve synchronised via Creative Cloud. When you sync a Collection in the desktop app, that Collection and its images will appear in Lightroom Mobile. You can view and even edit images in Lightroom Mobile and your changes will be synchronised with the desktop version.