The cynical part of me says "woopie cushion". It'd serve the dual purpose of being a wildly successful fart app, and would alert you if you were to ever acciden

The cynical part of me says "woopie cushion". It'd serve the dual purpose of being a wildly successful fart app, and would alert you if you were to ever accidentally sit on your iPad, and wouldn't actually require much in the way of effort.