Prophet Mobile vs RLM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prophet Mobile
Streamline your business operations by managing sales deals, contacts, and projects in one place. Track notes from all your interactions and update company and opportunity details effortlessly.
- Sales deal management
- Contact and company tracking
- Project management
- Note-taking for interactions
- Opportunity updates
Read full descriptionHide full description
Manage your sales deals, next steps, contacts, and projects from within a single app! Create and update contacts, companies, and opportunities. Track notes from conversations, emails, meetings, and more.
RLM
This business and financial calculator offers a comprehensive suite of tools for professionals. It includes functions for time value of money, interest rate conversion, cash flow analysis, statistics, and equation solving. Customize settings and access help documents for a powerful calculation experience.
- Time Value of Money calculations
- Interest Rate Conversion
- Cash Flow Analysis
- Statistics and Regression
- Break-Even Analysis
- Currency and Unit Conversions
- Equation Solver
Read full descriptionHide full description
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.
Screenshots
Verdict
The clearest difference is review sentiment: RLM at 100% against Prophet Mobile's 50%. RLM also leads on update cadence (every 4 weeks vs every 3 months). Prophet Mobile's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. RLM sells 1 one-off in-app purchase. Prophet Mobile asks for nothing beyond the download.
Prophet Mobile ships an update every 3 months, RLM every 4 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | Prophet Mobile | RLM |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 13 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Avidian Technologies, INC. | R.L.M. Software |
Customer experience
Prophet Mobile
RLM
In-app purchases
Prophet Mobile
No in-app purchases
RLM
- Lifetime Purchase$9.99





