Remember the days when hovering and clicking using the mouse were the most used trigger for interaction with site or app? Those days are gone. When Apple introduced the iPhone, multi-touch technology became mainstream and users learned that they could not only point and tap on the interface, but also pinch, spread, and swipe. Gestures are the new clicks.
The rise of touch and gesture-driven devices has dramatically changed the way we think about interaction. Gestures are more than merely entertaining, they are very useful and feel familiar. Today, the success of a mobile app significantly depends on how well gestures are implemented into the user experience.