Just bought this app for my new ipad & it's really great & going to a huge timesaver for me.

The backing tracks are surprisingly good too & quite usable on a solo or duo gig situation.

I downloaded the extra latin styles pack but come across the same old problem regarding samba.
ie. the rhythm is played the wrong way around on most tracks.
It's a shame that the makers of these things dont appreciate that samba too has a clave just like cuban music & can be played 2-3 or 3-2, this is a problem I find on band in the box too which I suspect is the basis of these styles.
The American way or old fashioned Brazilian way is 3-2 with the on beats of the rhythm in the 1st bar & the off beats in the 2nd (if you count it in 2/4) or the 1st & 2nd halves of the bar if thinking in 4/4 & this is the style used here in the irealb Latin style 3. Brazil Samba.

It shouldn't be that difficult to have it the other way around & nearly all modern Brazilian samba for the last god knows how many years has been this way.