September 25, 2015 10:01 PM PT
With the latest update, you can use PCalc to do quick calculations on your Apple Watch! The app also supports Handoff between iOS devices and Macs, Notification Center widgets, and much more.
PCalc is widely considered the best calculator on iOS and Mac, with sterling reviews from sites such as The Sweet Setup and Macworld. If you need a professional-level calculator in your life, PCalc is the one to get.