None of the ideas behind this is itself new, but the combination is a neat realization of multiple functions in one object for everyday home fenestration.
First, yes, these are easier to clean than simple American-style, up-or-side-sliding windows, but the Europeans solved that problem some time ago with their dual-mode designs (which open at an angle for breezes while maintaining security, or rotate inward like doors depending on how you turn the handle).
More interesting, perhaps, is the addition of a detachable planter that can take full advantage of being swung back indoors during adverse weather conditions (be it too much rain, or heat, or cold) then spun back outside just as easily.
Of course, it can be left halfway open as well to catch breezes, but one does have to wonder about the safety of such an arrangement. Dubbed simply the Two Face Window by Junkyung Kim & Yonggu Do, this author still rather prefers ‘Spindow’ regardless.