It doesn't really come with anything-
one 303 synth and one sequencer that you can program but just one pattern that can not be saved... at least the app will remember what you were doing when it gets reopened.
So there is neither any way to save any sound files so this is strictly for recording into something else if it is to be usable in any music making.
It comes with buttons to program the C-Major scale that can get the notes sharpened by using the # symbol on the notes you want to affect why it is like this who knows?
But it can be good to know as my first impression was that this was an accent as you have on the other 303 apps and on the original 303.
Otherwise it comes with all the usual parameters that you would expect on a 303, but also containing one delay, these parameters you can play live,
but the notes, octave up / down and slide functions are not tweakable in real time.
It is not exciting and it is not really suited for funtime groove-boxing
even though the controllers are responsive enough it just sounds to weedy,
it does not really have a lowend that would be useful.
One thing that it does have is a nice resonant filter that can selfoscillate and you can get some really nice textures using the resonance for interesting midrange frequency rhythms and it does have some sounds that at least me couldn't coax out of the other two 303's that have got tried so far.
Can see myself reach for this once in awhile just for that specific resonance sound that you can get out of it.
Some sound samples