Dual button dice roll

In a game of one on one where a dice is needed, an app where there is a button at either end of the screen and once both players have pressed the button it will spit out a random number for each player, so both players have their turn at the same time. It would be good to have both players have to press their buttons at the same, but smartphones probably won't recognise multiple presses. You'd have to of course set how many sides on the dice before using the tool.