"Oh God, please...," Solomon responded to IGN when asked about in-app purchases like power-ups, "No. I'm not sure I would be able to sleep at night. My food would taste like ashes in my mouth."
Solomon told us last month the iOS version, due this summer, is "the exact same game [as on PC or consoles], it's just now fully playable on an iPhone or an iPad." Given that it's the full game, it'll be "appropriately" priced at a premium point, although we're still waiting to see what that is. The iOS version will include the Elite Soldier DLC but not the Slingshot pack, while the Second Wave update remains a possibility.