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 13.0 or above.

Disclaimer: THIS IS NOT A HEWLETT PACKARD CALCULATOR, AND IS NOT SPONSORED IN ANYWAY BY HEWLETT PACKARD OR ANY OF ITS SUBSIDIARIES.