Duff Research, LLC today announced the release of Donut Factory Lite, a free version of Rocknor’s Donut Factory, for the iOS platform. In this highly strategic game, players help Rocknor save his factory by learning the craft of donut making. The recipe is simple. Players take dough, shape it, cook it, finish it off with delicious toppings, then ship it out to hungry customers. Originally released on the PC, reviewers have applauded Rocknor’s Donut Factory on iOS as a awesome, addictive puzzler.