Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
None that are as lightweight, ad-free and cost free as the iPhone calculator app. Hell just allow me to install the iPhone one in scaled mode and I'd be happy.
I'm just confused that the iOS calculator can't handle numbers bigger than 999,999,999, you have to switch into the scientific mode, which is not really well done anyway.
 
But....you have a written and proven calculator app just sitting there that we could use. Can we just download it and use it on our iPads?

....no.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.