I don't see the need for such a small child to have a tablet.
At that age they need human contact and interaction - there's not the value in "educational" software, IMHO.
Kids can only really take advantage of these devices when they can read and follow instructions themselves. Otherwise, you need to do the parent thing and amuse them with toys, games and other activities to stimulate them.
I held out until my son was seven before getting a tablet - the age when he can read and is computer literate to some extent.
Victorian Dad.