I just published the first beta version of GCodeTouch3D.
Paint something with your fingers and print it live on your 3D printer
paint the first layer and let the App extrude the additional layers.
The beta is available in Google Play Store (exclusively for GCodePrintr Community members)
Google does not allow to change free Apps to paid lateron, or to give beta versions for free 
Therefore the App is not free but I have choosen the smallest allowed amount (0.50€).
If you are interested anyhow:
First Opt-in for beta here https://play.google.com/apps/testing/de.dietzm.gcodetouch3d
Second: install the App from Google Play
https://play.google.com/store/apps/details?id=de.dietzm.gcodetouch3d
Excelent!!!
Forma now i sede it only compatibile with tablet…in future add compatibility with smartphone?(not able buy it from play with my s2/s3)
@Mauro_Manco yes, I will add Support for smaller screens later
My daughter will love this.
The App is online, but you first need to opt-in before it is visible:
First Opt-in for beta here https://play.google.com/apps/testing/de.dietzm.gcodetouch3d
Second: install the App from Google Play
https://play.google.com/store/apps/details?id=de.dietzm.gcodetouch3d