Is there a RPN style calculator application available? Maybe something similar to a HP 33S calculator? I searched but came up empty.
A gun in the hand is better than a cop on the phone.
Only the Skilled Survive
A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
Drill Sergeant Frick's Rules For Un-armed Combat.
1. Never be unarmed.
2. See Rule #1
USMC rule # 23 of gunfighting: Be polite, be professional, but have a plan to kill everyone you meet.
I would like to recommend PG Calculator for Android: PG Calculator - Powerful scientific RPN / Algebra calculator for Android
It works in both RPN and Algebraic modes and has a customizable user interface.