42S Calculator

Great app. Just like having your HP with you, but without the embarrassing belt clip!

Very nicely done program.

I love this all but for some but for some reason it won't start anymore! I have windows phone 8.1

I was disappointed to discover that there are only three levels to the stack. A free RPN calculator has far more, so I am surprised that an app that cost $5 was so severely lacking. If this was mentioned in the documentation, I didn't see it. Hopefully, this will be resolved in a future update.

I have learned that it does do hex computations...so it gets a 5. Terrific calculator...now I don't have to carry my original HP-42s

This replicates the 42s perfectly.

This is an RPN calculator, so it's not for everybody. It's an implementation of the Free42 calculator, a copy of the legendary HP 42S. It's perfect.