By far the best RPN app out there

I bought 3 popular and well rated RPN calculator apps 6 months ago and this one is - BY FAR - my choice over the others AND above the HP48GX handheld I used for years. It is an incredible bargan at $5.99. By way of background; I am a Mechanical PE for 20 years, and I know how to put it through its paces. How would I improve it? Add a paper-tape feature. Otherwise - you nailed it! Fantastic work!

Spectrosmith about allRPNCalc Calculator