Arghh
It is a "sand drawing app". Effect could have more depth and width to become more realistic. Save/replay is a nice added touch that I have not seen elsewhere. Pendulum is more like a spiralgraph than anything but does taper down to some extent, although physics could be more refined to once again, be more realisic. All in all a well spent .99. No complaints, just advice to dev.
Asdfgbb about
Drawing on Sand