TLA Systems has brought is popular calculator app to the Apple Watch today through the latest version of PCalc for iPhone. The PCalc Apple Watch app features a fully functional calculator for quickly crunching numbers from your watch — 1985 Casio-style like the similar Calcbot app — and similarly features a clever tip calculator that makes splitting the bill a cinch.

PCalc for Apple Watch also includes an app Glance that displays the most recent result from PCalc and serves as a shortcut to the calculator app from the watch face. Force Touching in PCalc on Apple Watch brings up a menu that includes a Send to iPhone feature as well.

While Apple includes a calculator app on the iPhone, it does not extend that to the Apple Watch. While it might seem like a throwback to the 80s, discretely calculating your tip and total at dinner has been a slick use of Apple Watch for me so far.

PCalc for iPhone with Apple Watch support is available on the App Store for $9.99. Version 3.4 is a free update to existing PCalc 3 for iPhone users.

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