I just created a new repository on Github with version 0.9 (absolutely Beta!) of my TouchOSC Sample Grid application. The documentation is very sparse but I think it is enough to get you going if you are interested to try it out.
It is inspired by Monome applications such as mlr or mlrv2 but works quite differently (and is certainly less sophisticated in its current version). Of course I am open for ideas or tips how to code this in a better way.
Here are the two interface screens: