4/5 rating based on 50 reviews. Read all reviews for Touch Fin RPN for iPhone.
Touch Fin RPN is free iOS app published by Elvis Pfutzenreuter
pvjayhawk
Can't tell the difference. Seems like some of the bugs got worked out. A must have for any financial person.
Final Word Reviews
I've actually paid real money for financial calculator apps and never regretted it because they're totally worth paying for. This app? Free! And, it works! Download it & be happy!
Squeak0321
This calculator is garbage! I can't clear my entries properly, it doesn't have a button for inputting negative numbers, and the enter button doesn't actually enter anything!
MU2DriverLA
I echo the sentiments of others requesting that the option to eliminate clicks and include some visual confirmation of button presses be added. Thanks.
j0esmoe13
A must have for any finance professional. Works as advertised without any lag. Can't beat the price (free!).
K2gw
I feel naked without my HP-12C and RPN. This lets me have it all time. The reviewer who couldn’t enter a negative number probably never used a RPN calculator in real life. This simulation handles it just fine. And using the empty space for ads where the name was on the physical one is brilliant and unobtrusive.
Dudenheimer
It was already a decent app, but the update that added a green highlight as buttons are pushed (particularly when volume is off) fixed its biggest flaw.
Heavy reader
Perfect reproduction of HP’s much beloved classic calculator. My only complaint is that haptic feedback on key presses doesn’t work. I was looking forward to that. Apart from that, I can think of nothing to complain about. This is My go-to calculator.
psb22
Solve e^2x - 3e^x + 2 = 0 Input range of .1 to .8 gives the correct result same as a real 15C Input range of 0 to 1 and the real 15C says 0 which is a root. This app returns 1 which is incorrect. I now wonder what other bugs are in the solver.