The "iPhone of Robotics" probably looks more like personal ownership of several robots: Roomba, iLaundry, iFoodPrep, iPutAwayGroceries, iPutAwayDishes, etc. iRobot has built a solid business reasonably automating a single household chore. I would bet an all-in-one laundry machine or bathroom cleaning robot could also do compelling sales.
At a minimum, it seems very ambitious to try to attempt to solve via robotics problems that are not well-solved using single-purpose machines.