Lag Switch is a kind of delay button. This doesn't mean that if you use it your bus or train or plane won't leave on time but is rather a gadget that is capable of making the flow of device data traffic lag.
And why would you want to delay the traffic flow on your device?
Very simple: to cheat in multiplayer games. When this switch is activated, traffic will be blocked for a few seconds and the connection between the device and the online game will be paused. Your opponents will appear to be frozen and you will be able to gain the upper hand. When the lag switch timer expires, the game is re-synchronized.
The app is very basic and features a simple interface where users can set activation and deactivation of the lag switch. However, to be able to use it in multiplayer matches you have to get the hang of using it because if a lag lasts too long for certain games and connections it can make the app stop working and kick us out of the match.