Text Png Builder respond ACTION_PICK image intent, and create png image from user text input.
This app is designed to use from other painting app like LayerPaint or LayerPaint HD to create text based image layer via Layer->Import menu.
And you can't use it stand alone.

This app does not create launcher icon and you can't launch by itself.
You should launch this app from other app via ACTION_PICK intent.

External font support:
Now you can choose ttf and otf file from SD and use it by choosing EXTERNAL at font-tamily combo box.