Unlike other translation management systems Lokalise assumes you store all your platform keys and translations in a single project. This means you can keep Android, iOS and Web strings together and even more - link similar keys between platforms, thus avoding extra translators' work. As an extra value comes the ability to see the overall project progress (which is especially useful in the multilanguage view).
Each project has unique ID (you can see it in project settings), that is used when referring to a project over API.
If you have multiple projects, it is possible to collapse them or reorder by simply dragging around. Use project timeline icon to see the project activity.