Would be useful if it works. But it doesnt.
I dont know how about on iPad and iPod but on iPhone 4s with 5.01 soft it doesnt open usually. Sometimes I have to try for a couple of minutes to make this app open. Much much worse than wolframalpha. Isnt worth money if it wont be fixed.
Dzejkej about
Wolfram Physics I Course Assistant, v1.0.2