# RLM-18CX — Business Consultant Calculator > Business and financial calculator with extensive functions for professionals. (iPhone/iPad app by Ricardo Lira Matte.) - Source: https://appshunter.io/ios/app/rlm-18cx/id6474547127 (this page in markdown: same URL + `.md`) - Developer: [Ricardo Lira Matte](https://appshunter.io/developer/289639238) - Category: Business, Finance - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 3 MB - Languages: English - Released: 2023-12-25 - Data updated: 2026-06-05 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/rlm-18cx/id6474547127/reviews.md ## What is RLM? The RLM-18CX is a business and financial calculator inspired by the real world HP-18C Business Consultant. It is designed to bring up the most of your iOS devices with an extensive set of menus and enhancements to cover most of the functions generally needed by financial, business, mathematical, engineering and scientific professionals. •TVM ->Time Value of Money menu to calculates compound Interest problems. •ICONV -> Interest Rates Conversion to convert between nominal and effective interest interest rates with periodic or continuous compounding. •CFLO -> Cash Flows menu to analyze cash flows of different amounts that occur at regular intervals. •SUM ->Statistics Calculations to analyze a one or two data samples lists with regression models and forecasting. •PERC -> Percents & Margins menu to calculate percent change, percent total and business margins. •BRKEV -> Break-Even menu to analyze the sales and production following relation: Profit = (Price - Var.Cost) • Units - Fix.Cost •CURR -> Currency Conversions menu to calculate world currencies conversions with manual input or on-line currency rates. •UNITS -> Physical Units Conversions menu to convert units within categories. •TIME -> Date & Time to calculate the days between dates or time intervals problems. •SOLVE -> Equation Solver menu to create custom menus base on arbitrary formulas or equations variables and to calculate any of them given the others. •MATH -> Mathematical Functions to calculate logarithms, trigonometric functions, factorial and Number Alteration functions. •MORE -> Utilities menu : •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 -> Help Documents: Description and examples of all the calculator worksheets and features. 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 - Time Value of Money calculations - Interest Rate Conversion - Cash Flow Analysis - Statistics and Regression - Break-Even Analysis - Currency and Unit Conversions - Equation Solver ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Purchase | $9.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/rlm-18cx/id6474547127/reviews.md ### 4/5 — Great calculator *2024-12-26* I had the official HP17BII calculator from this developer, until Apple pulled it from my phone. But this is an excellent (almost identical) alternative to the 17BII calculator. Only one annoyance - for some reason there’s a really annoying half second delay between pressing a button and feeling the haptic feedback, which could easily be fixed by the developer. Please fix it! The haptic feeling needs to occur the INSTANT the button is pressed. ## Frequently asked questions about RLM ### What is RLM-18CX? RLM-18CX is a business and financial calculator for iOS devices, inspired by the HP-18C. It offers a wide range of functions for professionals in finance, business, engineering, and science. ### Does RLM-18CX have ads? No, RLM-18CX does not contain advertisements. It is a free app with an optional one-time in-app purchase for full functionality. ### What are the system requirements for RLM-18CX? RLM-18CX requires iOS 15.0 or above and is supported on iPhone, iPad, and iPod touch devices. ### How long is the free trial for RLM-18CX? RLM-18CX offers a 30-day free trial period. After the trial, a one-time in-app purchase is available for lifetime access. ### Can I customize RLM-18CX? Yes, RLM-18CX allows customization of many aspects, including formats and feedback, through its General Settings menu. ### What kind of financial calculations can RLM-18CX perform? RLM-18CX can perform Time Value of Money calculations, Interest Rate Conversions, Cash Flow analysis, and Break-Even analysis, among other financial functions. ### Is RLM-18CX suitable for complex math and engineering problems? Yes, RLM-18CX includes a Math menu with logarithms, trigonometric functions, and factorial calculations, as well as an Equation Solver menu for custom formulas, making it suitable for complex problems. ### How often is RLM-18CX updated? RLM-18CX was last updated on April 26, 2024, indicating regular maintenance and potential feature additions. ## Version history (last 5 releases) ### 1.0.4 — 2024-04-26 Now you can listen music while using the calculator. ### 1.0.3 — 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. ### 1.0.2 — 2024-03-07 Fix a bug regarding Accessibility Setting that affect the look of the interface. Now is always drawn well. ### 1.0.1 — 2024-02-18 Fix the issue of Currency Exchange menu where the "Get Rate" stop working since February 16th, 2024. ### 1.0 — 2023-12-25 No release notes. ## 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 2026-06-05.*