We had no trouble opening an image in Free Clone Stamp Tool, but a tool tip or quick-start page would have helped by making it clear that the only way to sample pixels is to press Alt while left-clicking our mouse. The interface is quite basic for a graphics tool, which is not a bad thing: just a toolbar and main window. We followed Free Clone Stamp Tool's normal installation process, with the addition of a desktop icon. And that should give you a good idea of what Free Clone Stamp Tool does: It provides a basic, serviceable clone stamp tool for touching up digital photos, especially photos of faces. Photoshop is the Godzilla of graphics, so tools like LifeSniffer's Free Clone Stamp Tool follow the leader. It's also called the Rubber Stamp Tool, but it's the Clone Stamp Tool in Photoshop.
In graphics apps, the Clone Stamp Tool 'clones' (copies) a small area of an image and 'stamps' (pastes) it over another area, such as a blemish you want to hide.