Mobile apps to play dice is good, because it will bring comfortness to dicers. In addition, with dice game, the odds to have unexpected click during playing time is small, because we don't need to much complicated action to play dice. Sometimes, after work, we want to entertain with dice, and of course we don't want to sit on chairs, in front of computer screens to play dice. Lying on couch and play dice game with smart phones, tables is much more interesting, in the way we relax after work. However, it's only right if we play dice for fun (with small money). For big money used to play dice, it is obviously that playing on computer or laptop is better because it will prevent something wrong with our clicks and types (with our bets)
Gambling is supposed to be for fun in the first place. If you can't afford losing an amount, for whatever reasons, you should not play with that amount because even playing on your computer you can lose it because of the bad luck. You should always risk only a small (for you personally) amount, or you are risking to turn the whole gambling experience into hell otherwise. Be careful with that.
I just saw a trivia in the WinDice chat where one player won almost all the prizes. For the future I suggest limiting one prize per user per trivia so that other users, which have slower Internet, could have a chance to win.