By Ernest Brock

  • Category: Finance
  • Release Date: 2013-12-19
  • Current Version: 2.2
  • Adult Rating: 4+
  • File Size: 5.68 MB
  • Developer: Ernest Brock
  • Compatibility: Requires iOS 11.0 or later.
Score: 5
From 58 Ratings


12Calc is a full version of the well known HP12C for the iPhone and iPad. It also includes an audit tape, unit converter, worksheets, rotated views, user guide and HD graphics optimized for iPad and iPhone retina displays. •Runs in 64 bit mode on the latest iOS release and new iPads and iPhones. •Calculations are highly accurate and blazing fast. No more "running" flashing displays for amortizations, depreciation schedules or interest calculations. Work as fast as you can type. •Audit Tape: The audit tape keeps a record of your calculations. You can review, mail, text, share or print the tape. •Unit Converter: Convert between a wide variety of common units and currencies. Currency rates can be downloaded from the internet. •Work Sheets with interactive graphs: Auto Purchase Black-Scholes Bond Break-even Cash Flow analysis Currency Date Depreciation Interest Conversion Lease Loan Amortization (includes option for Canadian mortgages) Margin&Markup Ratios Refinance Statistics Tip TVM •Views for all orientations: Portrait and landscape renderings of the full keyboard are provided for iPhone and iPad. The iPad version includes slide over and multiple split view displays as well as side-by-side display of the help page, audit tape, tvm mortgage table or program variables. •Built-in contextual help: Touch the ? key for a description of any keyboard function with examples of use. If you are just learning or can't remember how to use a function- just touch the ? key. Includes tutorials on how to use reverse Polish notation (RPN) and how to solve time value of money problems. •HD Graphics: Graphics optimized for both retina and standard resolution screens. Choose from multiple color schemes including gold, rose gold, brass, copper, silver and several color tints.



  • Love my HP12C!

    By Northeast NY Mom
    I’ve been using an HP12C calculator for 25 years. I was thrilled to discover this app which allows me to carry my favorite calculator with me on my phone. Superb app! Beautifully and accurately designed and executed.
  • Fully Functional

    By DW Reader
    Im a die hard handheld 12c'er. In fact, my vintage one dates to 1987. The functionality of the app matches the original in all material ways. Well done.
  • Improved on original

    By Capthorne
    I learned to calculate on a HP12C & this app had the same feel-only better. Truly useful for those of us who still favor Reverse Polish Notation calculators.
  • 12Calx

    By Mozartbc
    Escolhi essa excelente calculadora por mostrar permanente os valores registrados para cálculos dos juros compostos.
  • Retired

    By matin1943
    A great version of the best calculator of it’s era. I still have my HP12c and use it. Fantastic to have one wherever I am.
  • The Best Financial Tool Ever Created

    By MirabalC
    It simply makes the original HP12c look like a toy. If you open the hood by touching the HP12c icon a new world of options appear. Charts, Graphs, printing tapes, Manuals. I have no idea as to why Apple nor Mr. Ernie Brock the creator of such amazing tool do not make people aware. I have never met Mr. Brock other than the personal response he provides to my queries. Is so powerful and easy to use that makes me look like a genius in front of my clients. I cannot look at any other cellular brand because I cannot have this App.Period!! Thank you, Mr. Brock. Carlos Mirabal
  • HP 12Calc

    By bvm72
    Wonderful App- works well, updated correctly- get it!
  • Better than a 12c

    By Eric Butterworth
    This app does everything that the 12c does and more. It is well thought out. It functions with excellence. Love it!
  • Better than the real thing

    By grfiv
    First, it’s a complete 12C on the iPhone Second, it has the lovely number displays telling you what’s in PV etc Third, it has a tape Fourth, it has lots of templates
  • Great ongoing support!

    By mcyield
    Great support. Works awesome