It only comes with one sound but it lets you play the different scales.
It comes with a small sequencer and it allows up to three notes to be played at the same time and you can let the sound freeze pressing pause and there is even a option to record.
You could perceivably use it for making some small loops to use in your music.
It would have been nice though if you could adjust the bpm, but it is not too important as the sequencer and recording function feels like a great small bonus.
To explore new territory or to just get a lesson in music theory/scales it is a good thing to have in your device and it is for free without publicity.