In principle, a good idea to wake up to pleasant sounds to let etc., so at least I have understood the meaning of this app. But the selection of sounds is really awful. Who listens to because like annoying traffic noise on. Somehow all the sounds are just exhausting, in principle crash and only a few seconds before they are repeated again in an endless loop, so very monotonous. There are such beautiful sounds pleasant but as the inventor of this app probably no sense of. On YouTube you can find fine examples.