TLA Systems has released PCalc 3.3 (http://www.pcalc.com), the first
update of the calculator in nearly two years. It incorporates all the
improvements made to PCalc for the iPhone, and comes with a modern
new look.

There’s an enhanced RPN mode that works more like classic HP
calculators, and smarter undo and redo support. In addition, there’s
a new more modern-looking calculator style based on the iPhone
version, which is now the default appearance.

PCalc 3.3 is a free upgrade for existing registered users of PCalc
for Mac OS X. For new users the cost is US$19 for a single-user
license.