RLM vs Greatweek.com
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RLM
This app is a powerful financial and business calculator designed for iOS devices, replicating the functionality of the HP-12C with expanded features. It offers comprehensive tools for finance, business calculations, statistics, scientific functions, and unit conversions.
- Finance and business calculations
- Amortization schedules
- Bond price and yield calculations
- Black-Scholes options valuation
- Depreciation methods
- Currency and unit conversions
- Statistical analysis
- Programmable functions
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The RLM-12CX application is a general purpose calculator with a special focus in finance and business. It is based in the Hewlett-Packard HP-12C calculator, but specially designed to bring up the most of your iOS devices. With all the functions originally provided by the real calculator and expanded with complete set of menus and worksheets. >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: Monthly, Semi-Annual and Annual Auto-renewable subscriptions or 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.
Greatweek.com
This app streamlines property development business management. It offers access to multiple lenders for project finance and includes innovative tools for expense management and bookkeeping.
- Project finance access
- Expense management
- Bookkeeping tools
- Business management
- Lender access
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Greatweek helps property developers manage their business smoothly. You can access multiple lenders and finance your next project. In addition, manage your business with innovative expense management and bookkeeping app.
Screenshots
Verdict
The clearest difference is rating: Greatweek.com at 5.0 against RLM's 4.5. Greatweek.com also leads on in-app purchases (none vs 4) and update cadence (weekly vs every 5 weeks). RLM's advantage is ratings volume (18 vs 1). 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 4 in-app purchases, starting at $0.49 per month. Greatweek.com asks for nothing beyond the download.
Greatweek.com holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: RLM has 18 ratings behind it against 1, so its average is the more settled of the two.
RLM ships an update every 5 weeks, Greatweek.com weekly. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.
| Parameter | RLM | Greatweek.com |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (18 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 90.0% of reviews | — |
| Number of ratings | 18 — better | 1 |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 32 MB |
| Age rating | 4+ | 17+ |
| Developer | R.L.M. Software | Great Week LLC |
Customer experience
RLM
Greatweek.com
In-app purchases
RLM
- Monthtly Subscription$0.491 Month
- Semi annual Subscription$2.996 Months
- Annual Subscription$5.991 Year
- Lifetime Purchase$9.99
Greatweek.com
No in-app purchases






