The app is free and there is no watermark on the images.
*** How to use ***
Choose the photo you want to use.
Choose a moustache from the gallery.
Move the moustache to where you want it.
Resize the tash.
Save the photo.
*** Resizing ***
Drag the white bubble to the side of the moustache to change its size.
*** Devices ***
Most devices have the capability to save the image that is created.
However if the device cannot do this a screenshot of the application will be taken.