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App Store Apps > Productivity > RLM-19BX
RLM-19BX icon

RLM-19BX

by R.L.M. Software · Productivity · Free
On the App Store since December 2021 · Data updated 2026-10-28

RLM-19BX is made and published by R.L.M. Software. AppBrain is an independent app data site and isn't affiliated with R.L.M. Software. The app name, icon, screenshots and description belong to R.L.M. Software and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
4.86
7 ratings
Last updated
October 21, 2026

It doesn't have enough ratings yet to judge what users think.

Official page on the App Store

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Releases

Updates seen on the App Store
Version
4.0
Launched
December 2021

No changelog data

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Technology

Found in the app by AppBrain
Price
Free
App size
7.49 MB
Content rating
Everyone

Technologies used by RLM-19BX

About the app and developer

About RLM-19BX

RLM-19BX is a productivity app developed by R.L.M. Software.

What is the rating of RLM-19BX?

RLM-19BX is rated 4.86 out of 5 stars, based on 7 ratings.

Is RLM-19BX free?

RLM-19BX is free. The app size is 7.49 MB. The latest version available is 4.0. The last update was on October 21, 2026.

What are the requirements for RLM-19BX?

The app has a content rating of Everyone. The app has been available on the App Store since December 2021.

Developer information for R.L.M. Software

R.L.M. Software

Address:

Share RLM-19BX

Store listing

By R.L.M. Software, from the App Store
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Screenshots by R.L.M. Software, from the the App Store listing
Description by R.L.M. Software Written by the developer, not by AppBrain. Click to read.
The RLM-19BX is a calculator for finance, business and science. It is designed to bring up the most of your iOS devices with an extensive set of worksheets and enhancements to cover most of the functions generally needed by financial, business, mathematical, engineering and scientific professionals.

>Finance Worksheets:
•Account Balance: Calculates the Balance of cash transactions and interest applied at arbitrary dates.
•Amortization: Loan Amortization Schedule for a single or several loan payments.
•Bond Price & Yield: Calculates the Price, Yield and Effective Duration of a Bond.
•Black-Scholes Options: Calculates the CALL, PUT and “Greeks” values of a Black-Scholes European option.
•Depreciation: Calculates depreciation with SL, SOYD, DB or MACRS methods and conventions.
•Interest Rates: Nominal and effective interest conversion.
•Time Value of Money: Calculates compound Interest problems.

>Business Worksheets:
•Bill-Tip-Split: Calculates the sharing of a Bill with Tip.
•Break-Even: Analyze the following relation: Profit = (Price - Var.Cost) • Units - Fix.Cost
•Currency Exchange with manual or on-line rates.
•Inventory Turn Over.
•Percents & Margins: Calculates %Change, %Total and Business margins.
•Return on Investment.

>Cash Flows Worksheets:
•Equal Periods: Cash Flows occurring at regular time intervals.
•Unequal Periods: Cash Flows occurring at arbitrary dates.

>Statistics Worksheets:
•Probability: 16 probability distributions.
•One or Two variables Statistics.
•Curve Fitting: 6 Regression models to fit a curve.

>Scientific Worksheets:
•Angles & Polar-Rectangular conversions.
•Complex Numbers: Operations and functions with complex numbers.
•Combinations & Permutations.
•Logarithms, Trigonometric, Hyperbolic and Number Alteration functions.
•Quadratic Equation solver
•Triangle Solution: Solves a Plane & Spherical triangles.
•3D Vectors: Operations and functions with vectors in Cartesian, Spherical or Cylindrical coordinates.
•Universal Constants: All the NIST-CODATA physical constants values and descriptions.
•Units Conversion: Physical units conversion completely customizable.

>Conversion Worksheets:
•Angles: Convert angle between DEG,RAD,GRAD,DMS and Slope %.
•Currencies: world currencies conversions with manual input or on-line current rates.
•Interest Rates: Nominal and effective interest conversion.
•Units: Physical units conversions.

>General Worksheets:
•Date: Calculates days between dates with Actual, 360 or 365 days calendars.
•Time: Calculates time intervals between different times.
•Solver: Calculates arbitrary equations entered as text expression to solve any of the variables knowing the others.
•Storage Registers: Store and perform operations directly over the calculators storage registers.
•Memory Content: Clear, Back-Up or Restore part or all of the Calculator's memory.
•General Settings: Customize many aspects of the calculator including formats & feedbacks.
•Help Documents: Description and examples of all the calculator worksheets and features.
•General Settings to set classic and new keyboard skins, RPN and algebraic logic, sounds, display format, etc.

>Editors Worksheets: To create or edit data
•(Date,Trx) List: Transactions and the dates they occurs for the "Account Balance Worksheet".
•(Date.CF) List: Cash flows and the dates they occurs for the "Unequal Periods Cash Flows Worksheet".
•(X,N) List: Cash flows and repetitions for the "Equal Periods Cash Flows Worksheet".
•(X,Y) List: X and Y data samples for the Statistics worksheets.
•Solver Equation: Algebraic expression for use in the "Solver" worksheet.
•Units Database: Customize the "Units" worksheet.

System requirements: iOS 26.0 or above.

30-day free trial, then a single one-time Lifetime Purchase. No subscription.

License Agreement:
http://www.apple.com/legal/itunes/appstore/dev/stdeula

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