PCalc has been updated, adding 64-bit support, a new theme, and a new mode. The new dark theme, called "Samurai Night", can be set to turn on automatically at night. On the iPhone, dark menus will disply while using the night theme. Additionally, you can make the text on the keys bolder if you choose. PCalc Lite, the free version of the app, was also updated with the ability to automatically sync in-app purchases between devices using iCloud, meaning that you will no longer have to tap "Restore purchases" in order to get that content on multiple devices. Nice.