Shine is a super minimalistic Weather app with a carefully crafted design. Everything from the icon to the apps content has been crafted to be delightful.
Shine only has one purpose: Showing you the weather for your current location packaged in a deeply appealing format. Nothing more, nothing less.
Because of that you might find that it lacks a lot of features from other competing applications. It does not offer any way to add more than one location. It does not offer graphs or fancy visualizations. That is by choice.