Deer is a Todo Planner app with 2 key concepts in mind: efficiency and clean aesthetics.
It showcases BLoC pattern in action, in an app which is easy enough to understand, but complex enough to benefit from clean code structure. Deer has also a couple of interesting custom widgets, like EditableBulletList, which allows app users to easily add check lists with intuitive UX. Another special feature is the ability to change whole custom color themes on the fly, from within running app.
In general, Deers purpose is to make todo planning simple and quick with its modern, intuitive design.