Designed & Published By R.L.M. Software

  • App Category: Utilities
  • Release Date: 2008-10-11
  • Current Version: 7.0.1
  • Adult Rating: 4+
  • File Size: 20.96 MB
  • Developer: R.L.M. Software
  • Compatibility: Requires iOS 11.0 or later.
  • App Ratings:
    4/5 ( 154 Reviews)
  • Price:
RLM-11CX App Ratings: 4
Based on 154 Reviews

RLM-11CX App Description

The RLM-11CX is a full simulation of the successful HP-11C Scientific RPN calculator, with all the functions of the real one in a beautiful high definition interface. It includes a dynamic Portrait and Landscape orientation layouts that can be lock in the calculator’s preference ([g] > [PREF] key sequence). The 11CX version has a complete set of Menus & Features that expand the original calculator functionality and usability: Scientific & Statistic features: - 3D Vector Math: Operations and functions with three components vectors stack with cartesian, spherical or cylindrical coordinates. - Angles & Polar: Angular conversions units ‘from’ or ’to' Deg, Rad, Grad, degree-minute-second and % slope. - Complex Math: Operations and functions with complex numbers stack in rectangular or polar coordinates. - Curve Fitting & forecast with 6 regression models using a X,Y data list. - Equation Solver with editor to enter arbitrary equations and solve for any variable given the others. - Fundamental Universal Constants to enter any of the NIST-CODATA values. - Probability Distributions menu with Exponential, Normal, Uniform, Weibull and t-Student. - Plane Triangles solution for ASA, SAS, SSA & SSS calculation modes. - Spherical Triangles solution for AAA, AAS, ASA, SAS, SSA & SSS calculation modes. - Units Conversion menu and editor with 10 categories: Adds a powerful and completely editable physical units conversion. - X-Y Data Editor: Create, Edit, Save & Load statistical X,Y data lists. Financial & Business features: - Black-Scholes OVM: Calculates “Call” & “Put” options prices of European Options. - Bonds Price & Yield: with Annual or Semiannual coupons and Actual or 30/360 calendars. - Cash Flows Calculations: Calculates NPV,i%,IRR%,NFV,MIRR, NUS, etc. over cash flows series. - Cash Flows Editor: Create, Edit, Save & Load cash flows series. - Currency Exchange: All world currencies with actual online rates. - Margins & Break-Even: calculate business margins and production break-even over all variables. - TVM calculations: “Time Value of Money” problems for loans, amortizations, mortgages, etc. - Tip & Bill Split: Calculates tips over a bill and split the total amount over participants. Other: - Date & Time: Perform calculations over date and time variables. - Memory Registers: View All with Backup & Restore through text emails. - Program Editor: Create, Edit, Save & Load programs. - Program Debug: Executes a program step-by-step with Undo. - Settings: Customize many settings, including formats, sounds, interface, etc. - Quick description of any key. Touch the screen and touch the “?” button to toggle the quick help on. Touch the screen again - Help Documents: A complete set of short documents with examples of all functionalities. System requirements: iOS 11.0 or above. Disclaimer: THIS IS NOT A HEWLETT PACKARD CALCULATOR, AND IS NOT SPONSORED IN ANYWAY BY HEWLETT PACKARD OR ANY OF ITS SUBSIDIARIES.

RLM-11CX App Screenshots

App Reviews

  • I want an HP16C

    By Supuflorous Flounder
    This product is wonderful. But I miss things the HP16C had, like hex/decimal/octal/binary conversions, and all those other cool programming operations. I’m writing this in the hope that someone at RLM reads it, and they fill in the missing gap in their product line. And it would be great if I could convert it to a scientific calculator. I used to have two calculators, one that could do trig and one which could do hex. Having a single app on my iPhone that would let me switch between HP11C mode and HP16C mode would be awesome. I love HP calculators, and this company has done a stunningly great job of emulating (and enhancing) them. But please bring back the absolutely very best calculator HP ever produced, the HP16C.
  • Fantastic calculator

    By PaulKay
    I became a convert to reverse polish notation (RPN) calculators in Engineering school with my 11C and 15C calculators. Finding the 11C model in an app was like heaven sent. I swear by this thing and the improvements made with tools extensions triples it’s value to me. Love it.
  • Best RPN Pocket Calculator 2018

    By shubert
    Right now, this is the finest hand-held calculator in the world, 2018. Now with clean iPhone X support. Great work devs! Must buy for RPN lovers.
  • Works well, but...

    By Dchines
    My old App was crucial, but not updated. HP charging quite a bit, so gave this a try. I like the added features. However, it appears that the Currency Converter has an issue. When I press Get Rate, it always returns 1 USD = XXX, where XXX is the country of choice. For example, 1 USD = EUR. But actually checking the value on Transfer sites or even just Google yields 1 USD = 0.85 EUR. Yes, I am attached to the internet and the app does not return an error. Please fix for added stars!
  • Nice, but questionable trig accuracy

    By Dr. 88 Keyz
    11CX (version 6.0) is very nice, beautifully rendered, plus adds great features additional features not present in the HP-11C. However, accuracy for trig functions (in RAD mode) isn’t very good. For example, SIN(3.141592653) and SIN(3.141592654) both incorrectly return a value of “0”. Another example, for x << 1, SIN(x) is supposed to be ~x. Down to ~1e-8, the app return the correct value for SIN(x). Below ~1e-9, the app returns “0” for SIN(x) which is incorrect. The other thing I don’t like, on overflow, the app displays “1.0000 10” instead of “9.9999999 99” depending on the number of digits set to display... the real calc always displayed “9.9999999 99” no matter how many digits it was set to display, which made it very obvious to the user there’s an overflow error. Hopefully these issues will be fixed soon in a future revision.
  • Used daily

    By Bunzip
    I've had this app a few years. It complements my real 11c. This app beautifully emulates the physical calculator. I use it daily, love using it.
  • 64 bit support

    By Iaeen
    Finally an update! This is the best iPhone calculator by far, but I was worried that I would lose it in the near future due to iOS 11 dropping support for 32bit apps. Problem solved!
  • Nice

    By Aravennest
    I'm sitting in a room full of people working on business problems using their default phone calculators. I'm using this app and working about four times as fast as every other person in the room.

    By Toxless
    Thank you for the update!!! Like another reviewer, I have an original 11c that lives on my desk and I still use it daily. On the go I use this app on my iPhone. I was dreading the possibility of it deprecating and now very pleased to see this update. This is such an excellent rendition of the original device -- thank you for the devotion and labor you put into doing it!
  • Thank you for the update!

    By noel8816
    I used an HP-48GX during my time in engineering school and at the beginning of my engineering career. Currently I still have an old HP-11C and this app. I find the app's HP-11C simplicity along with the added financial, unit conversion functions and extended stack a perfect balance in my professional career. Now that the app is updated to 64-bit and on my larger screen iPhone 6S, this has really perfected the interface of this app. Thanks again!!!