Touch Fin RPN

Touch Fin RPN

By Elvis Pfutzenreuter

  • Category: Finance
  • Release Date: 2014-12-07
  • Current Version: 4.00
  • Adult Rating: 4+
  • File Size: 43.28 MB
  • Developer: Elvis Pfutzenreuter
  • Compatibility: Requires iOS 9.0 or later.
Score: 3.5
From 49 Ratings


Touch Fin RPN is an RPN financial and scientific calculator that implements most features of the industry-standard HP-12C, including programming functions. It also implements a scientific RPN flavor that implements most functions of the beloved 11C. And even more flavors (10C-like, 16C-like) can be purchased within the app.



  • Good upgrade

    By 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.
  • Superb HP-12C

    By 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.
  • Works great

    By j0esmoe13
    A must have for any finance professional. Works as advertised without any lag. Can't beat the price (free!).
  • Good, but...

    By 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.
  • Are you all insane?

    By 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!
  • Works great & it's free!

    By 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!
  • Touch Fin

    By RWPB
    Fantastic. Just as good as the HP 12C-Pro.
  • Slick impersonation

    By pvjayhawk
    Can't tell the difference. Seems like some of the bugs got worked out. A must have for any financial person.
  • Looks good to me

    By Vjarj
    Very good rendition of the hp12c.
  • Fine tool

    By DavidNY61
    This is an excellent version of the classic HP12C. I've had a 12C since the 1980s and few people understand. This gives you everything you need and it's free. Advertisement is unobtrusive