# RLM-12PX — Finance & Business Calculator

> HP-12C Platinum emulator for iOS with finance, business, and scientific calculators. (iPhone/iPad app by R.L.M. Software.)

- Source: https://appshunter.io/ios/app/rlm-12px/id1613770734 (this page in markdown: same URL + `.md`)
- Developer: [R.L.M. Software](https://appshunter.io/developer/289639238)
- Category: Finance, Business
- Price: Free with in-app purchases
- Rating: 4.30/5 from 4 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 6 MB
- Languages: American English
- Released: 2022-09-08
- Data updated: 2026-08-14
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/rlm-12px/id1613770734/reviews.md

## What is RLM?

The RLM-12PX application is a general purpose calculator with a special focus in finance and business. It is based in the Hewlett-Packard HP-12C Platinum calculator, but specially designed to bring up the most of your iOS devices and , at the same time, conserving the easy of use and all functions originally provided by the real calculator.

>Finance Menu:
•Account Balance: Credit line type account based on cash transactions and interest rates applied. 
•Amortization: Loan Amortization Schedule for a single loan payment or from several payments at once. 
•Bond Price & Yield: Bonds calculations in an easy way with all options and values at sight.
•Black-Scholes Options: CALL, PUT and “Greeks” calculations of the Black-Scholes European option valuation model.
•Depreciation: Calculates depreciation with SL, SOYD, DB or MACRS methods and conventions.
values at sight.
•Interest Conversion: Nominal and effective interest conversion.
•Time Value of Money: Compound Interest problems involving money earning interest over a period of time.

>Business Menu:
•Bill-Tip-Split: Calculates the sharing of a Bill with Tip.
•Break-Even: Analyze the following relation: Profit = (Price - Var.Cost) • Units - Fix.Cost
•Date/Time: Calculates Date and Time intervals with all values at sight.
•Currency Exchange with on-line rates.
•Percents & Margins: Calculates %Change, %Total and Business margins.

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

>Statistics Menu:
•One-Variable Statistics: Calculations for one variable data samples.
•Two-Variable Statistics: Calculations for two variables data samples.
•Probability: Combinations, permutations and Normal, Exponential, t-Student and Weibull probability distributions.

>Scientific Menu:
•Angles & Polar: Convert angles and coordinates.
•Logarithm functions with common or arbitrary base.
•Number Alteration functions
•Triangle Solution: Solves a plane triangle.
•Trigonometric & Hyperbolic functions.

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

>Program Menu
Create, edit or load previously saved programs.

>Solver Menu
Solve arbitrary algebraic equations entered and saved in the equation editor and creates a menu with all the variables to solve any of them.

>Utilities Menu
•General Settings: Customize the calculator to your preference.
•Storage Registers: Store and perform operations directly over the calculator’s storage registers.
•Memory Content: Shows all memory content edit, backup or restore.
•Help Documents: learn by example about all menus.
>Editors: submenu to select data editors.

System requirements: iOS 15.0 or above.

30 days Free-Trial.
In-App-Purchase: One-Payment for life. 
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.

## Key features

- Finance and business calculations
- Loan amortization and bond pricing
- Black-Scholes options valuation
- Currency exchange with online rates
- Statistical analysis
- Scientific and unit conversions
- Program creation and equation solving

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Subscription | $5.99 | per year |
| Semi-Annual Subscription | $2.99 | per 6 months |
| Monthly Subscription | $0.49 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Purchase | $9.99 | one-time |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/rlm-12px/id1613770734/reviews.md

### 2/5 — Usability issue

*2024-09-05*

This software has only one problem: the buttons work unnaturally, they work in the “on release” state, which is correct, like any other button in this system, “on press”.
An annoying issue: this characteristic of the buttons slows down the process, sometimes leading to typing errors. I would really like the developers to consider making the registration process for these buttons the same as any other button in this system. After all, it is a well-developed software that I would really like to buy and actually use.

### 2/5 — Not delivering what you bought

*2023-01-19*

I bought on app store the life time subscription but when go to activate in my Macbook M1 it just crash, cannot do that.

### 5/5 — Ótima opção free

*2022-12-04*

Opção sem anúncios, boa usabilidade e disponível sem custos.

## Frequently asked questions about RLM

### What financial functions does RLM-12PX offer?

RLM-12PX provides a comprehensive finance menu including account balance tracking, loan amortization schedules, bond price and yield calculations, Black-Scholes option valuation, depreciation methods (SL, SOYD, DB, MACRS), interest conversion, and time value of money calculations.

### Can RLM-12PX handle business-related calculations?

Yes, RLM-12PX includes a business menu with features for bill splitting, break-even analysis, date/time interval calculations, currency exchange with online rates, and percentage/margin calculations.

### Does RLM-12PX support programming?

Yes, RLM-12PX has a dedicated Program Menu that allows users to create, edit, and load previously saved programs, similar to the functionality of the original HP-12C calculator.

### What are the system requirements for RLM-12PX?

RLM-12PX requires iOS 15.0 or above and is supported on iPhone, iPad, and iPod devices.

### How does RLM-12PX handle currency exchange?

RLM-12PX offers currency exchange with both manual input and on-line current rates, ensuring you can perform conversions with up-to-date information.

### What is the pricing model for RLM-12PX?

RLM-12PX offers a 30-day free trial and is available with various subscription plans: Monthly ($0.49), Semi-Annual ($2.99), and Annual ($5.99).

### How often is RLM-12PX updated?

The latest version of RLM-12PX is 2.1.5, and it was last updated on April 26, 2024, indicating regular maintenance and updates.

### What kind of statistical functions are available in RLM-12PX?

RLM-12PX includes one-variable and two-variable statistics calculations, as well as probability functions for combinations, permutations, and various probability distributions like Normal, Exponential, t-Student, and Weibull.

## Version history (last 5 releases)

### 2.1.5 — 2024-04-26

Now you can listen music while using the calculator.

### 2.1.4 — 2024-04-04

New editor for the Unit Conversion Database. Fix a problem with some devices involving the edition of a units conversions and categories in the database.

### 2.1.3 — 2024-03-07

Fix a bug regarding Accessibility Setting that affect the look of the interface.
Now is always drawn well.

### 2.1.2 — 2024-02-18

Fix the issue of Currency Exchange menu where the "Get Rate" stop working since February 16th, 2024.

### 2.1.1 — 2024-02-11

Enabling a 'Return' keyboard equivalence for the ENTER key.

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## More apps by R.L.M. Software

- [RLM-10BX](https://appshunter.io/ios/app/rlm-10bx/id1563019331)
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- [RLM-11CX](https://appshunter.io/ios/app/rlm-11cx/id1630739014)

All apps by R.L.M. Software: https://appshunter.io/developer/289639238

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*