BEST IOS CALCULATOR IN APPSTORE

I just love it, soooo flexible. Awesome. And great addon of quiz (for all of us math geeks). Buuuuut, i would of given it 5 stars for this version if it didnt crash when I delete a plus sign or faster load on past pages. Always room for improvement. I use iOS 5.1 newest and iPhone 4s. Keep it up.

lichigo about Calculus doodlus