Well, you are not advised to use ipad with your bady, as the colorful images will capture the full attention of the baby and your inattention to them will hurt their feelings. As boys will be boys, they do not have self-control. The inproper distance and the strong radiation will influence their body and brain growth. Besides, when they are focus on ipad, they will become passive and quiet. According to the recent studies, insufficient stimulation and passivity cause serious problems to them blocking their curiousness to other things in daily life. Babies are attractive to the screens because they move and need less attention providing a decreased sensory environment. Then a little soreness occur, which will progress to dry eyes or even headaches. By the way, take a 15 minute break every hour.