So why would you need another calculator on your iPhone? Well, BluCalc features a blue backlit display and sleek, blue neon buttons. Apples built-in calculator does not. Period.
So, if you are a big fan of blue neon-like calculators for some reason, this is the app for you. Otherwise just stick with the standard iOS-calculator.
Also worth pointing out: as of version 1.1 BlueCalc supports the iPad in beautiful full-screen. Since the iPad does not include a calculator by default there is no reason not to get your copy of BluCalc today!