I asked a while back on what physics apps do you people have, or like, for your smartphones or tablets. I certainly received quite a number of suggestions.
Today, the Wall Street Journal has an article on the best apps for your kids to learn math and physics. I think the suggested apps are too elementary for most (all?) of you reading this blog. But still, in case you have young ones under your care or supervision, these apps might be something you want to check out if you don't know about them already.