This app is worth the price--no doubt about it

OK. Ive owned an h/p 12c since they first came out (and know how to use it) and frankly, this app is as good, and now there is one less thing to carry around. Other reviewers miss the point: the idea here is to replicate the user interface of the 12c, not create a cool new calculator, hence the "old fashioned" appearance. Sure, you can get a "financial" calculator for $10, but if you are used to the 12c, you want the same functionality, just in the iPhone. And please, stop all the whining about "these apps are too expensive!" If $20 cost is a problem, you probably dont need the application.

Yes, it would be nice to have the R/S key and programability, but that didnt stop me from buying!

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