More Pad Please

I bought the iPhone version of N-Track
I am disappointed with the pad

First of all, there are not enough pads for 4x4!
The pads on Ableton Note are 5x5.
Koala Sampler has 8x8 pads.

Cubasis also allows you to change the velocity depending on where I hit!
It would be great if the velocity changes up and down and the CC changes left and right!