TLA Systems updated PCalc (www.pcalc.com), the omnipresent scientific calculator, adding support for iOS 10, watchOS 3, and macOS Sierra operating systems.
PCalc for the Mac is available for $9.99 from the Mac App Store. PCalc for iOS 10 and watchOS 3 is available for $9.99 from the Apple App Store at the following link. PCalc Lite for iOS 10 and watchOS 3 is available for free at the Apple App Store.