# RLM-14BX > RLM-14BX (iPhone/iPad app by Ricardo Lira Matte.) - Source: https://appshunter.io/ios/app/rlm-14bx/id6499032999 (this page in markdown: same URL + `.md`) - Developer: [Ricardo Lira Matte](https://appshunter.io/developer/289639238) - Category: Finance, Business - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 3 MB - Languages: English - Released: 2024-04-21 - Data updated: 2026-05-16 - User reviews in markdown: https://appshunter.io/ios/app/rlm-14bx/id6499032999/reviews.md ## What is RLM? The RLM-14BX application is a financial and business calculator. It is based in the Hewlett-Packard HP-14B 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 the functions originally provided by the real calculator and nine menus added to expand it to professional level. Get it for free during 30 days (after you have to buy an In-App-Purchase lifetime payment). The RLM-14BX has a extensive Menu System accessed from the Main Menu or directly from the keyboard: >Main Menu: •Bond Price & Yield: Calculates the Price, Yield and Effective Duration of a Bond. •Call / Put: Black-Scholes Options Valuation Model to Calculates the CALL, PUT and “Greeks” values. •Depreciation: Calculates depreciation with SL, SOYD, DB or MACRS methods and conventions. •Date / Time: Calculates days between dates with Actual, 360 or 365 days calendars and time intervals between different times. •Currencies: world currencies conversions with manual input or on-line current rates. •Units Convert: Customizable physical units conversions. •Solver: Calculates arbitrary equations entered as text expression to solve any of the variables knowing the others. •Probability: Combinations, permutations and Normal, Exponential, t-Student and Weibull probability distributions. •Utilities: -General Settings: Customize many aspects of the calculator including formats & feedbacks. -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. -Help Documents: Description and examples of all the calculator worksheets and features. -Solver Equation: Algebraic expression for use in the "Solver" worksheet. -Units Database: Customize the "Units" worksheet. >Keyboard Menus: •AMORT: Loan Amortization Schedule for a single or several loan payments. •CFLO: Cash Flows calculation of the NPV, IRR, NFV, NUS, Payback Period, etc. for different cash flows occurring at regular time intervals. •STAT: Statistics calculation of the Mean, Median, Standard Deviation, Curve Fitting and forecasting, etc. for two variables data samples. •MATH: Trigonometric and logarithmic functions. •B.EVEN: Break-Even analysis using the relation: Profit = (Price - Var.Cost) • Units - Fix.Cost •ROI: Return on Investment analysis using the relation: ROI% = Revenue • %Profit / Investment •INVEN: Inventory turnover analysis using the relation: Inventory Turnover = 2 • Cost of Goods Sold / (Begin - End inventory) >Keyboard direct functions: •Interest Rates Conversion: NOM%-EFF%-P for Nominal and effective interest conversion. •Percents Change: OLD-NEW-%CHG for percent change calculations. •Percent Total: TOTAL-PART-%TOTAL for percent total calculations. •Business Margin: CST-PRC-MAR for business margin calculations. •Time Value of Money (TVM): N-I/YR-PV-PMT-FV for compound interest calculations. System requirements: iOS 15.0 or above. 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. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Purchase | $9.99 | one-time | ## Version history (last 2 releases) ### 1.0.1 — 2024-04-26 Now you can listen music while using the calculator. ### 1.0 — 2024-04-22 No release notes. ## Apps similar to RLM | App | Rating | Price | Category | | --- | --- | --- | --- | | [freedom CCC-a calculator](https://appshunter.io/ios/app/freedom-ccc-a-calculator/id6743230137) | — | Free | Finance | | [Bank47](https://appshunter.io/ios/app/bank47/id6502911792) | 4.9 (57) | Free | Finance | | [12Calc](https://appshunter.io/ios/app/12calc/id780780002) | 4.9 (821) | $8.99 | Finance | | [Sports Afield Mortgage](https://appshunter.io/ios/app/sports-afield-mortgage/id1673537728) | — | Free | Finance | | [CALC 1 Financial Calculator](https://appshunter.io/ios/app/calc-1-financial-calculator/id1394715582) | 3.9 (53) | Free | Finance | | [All in 1 Finance Calculator](https://appshunter.io/ios/app/all-in-1-finance-calculator/id6447434808) | — | Free | Finance | ## More apps by Ricardo Lira Matte - [RLM-10BX](https://appshunter.io/ios/app/rlm-10bx/id1563019331) - [RLM-17BX](https://appshunter.io/ios/app/rlm-17bx/id1593889938) - [RLM-19BX](https://appshunter.io/ios/app/rlm-19bx/id1597086394) - [RLM-12CX](https://appshunter.io/ios/app/rlm-12cx/id1613759385) - [RLM-12PX](https://appshunter.io/ios/app/rlm-12px/id1613770734) - [RLM-11CX](https://appshunter.io/ios/app/rlm-11cx/id1630739014) All apps by Ricardo Lira Matte: https://appshunter.io/developer/289639238 --- *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 2026-05-16.*