iOS 7 abolished many of the design paradigms of its prior versions in its main design, and that has filtered down to every major app built in to your device. But user interface isn't the only thing that's gotten an overhaul--some apps have new features as well as a new look. Here are some of the more minor stock app redesigns and updates in iOS 7.CalculatorIf you need your calculator apps to have skeuomorphic buttons and shiny entry fields, the new iOS 7 Calculator app (available for the iPhone and iPod touch only) may disappoint you: Apple has re-skinned the entire program to be smooth and flat, using colors and shades to differentiate the number pad.Apple has opted to remove the memory buttons on the calculator in portrait view; instead, you get a larger number pad and a percentage function--good for calculating quick tips. Landscape view, as always, brings you into scientific calculator mode, where Apple has added a few new functions. The lineup now includes buttons
