Comparison

Stack RPN Calculator vs RLM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Stack RPN Calculator

This scientific calculator displays major functions on screen and utilizes a stack for calculations. It supports a stack of up to 4 values but can store many more numbers depending on device memory.

Highlights
  • Visible scientific functions
  • RPN (Reverse Polish Notation) input
  • Stack display for up to 4 values
  • Large number storage capacity
  • Designed for iPhone and iPad
Features
Read full description

RPN scientific calculator benefiting from the major scientific functions visible on the screen. The calculator shows a stack of up to 4 values but can store a large number of numbers (depends on the phone's memory).

About

RLM

This advanced scientific calculator emulates the functionality of the HP-15C, offering comprehensive tools for finance, business, statistics, and scientific calculations. It supports programming, equation solving, and unit conversions, optimized for iOS devices.

Highlights
  • Programmable advanced scientific calculator
  • Finance and business calculation menus
  • Statistics and probability functions
  • Complex numbers and matrix operations
  • Unit and currency conversions
  • Equation solver and programming capabilities
Features
Read full description

The RLM-15CX application is a programable advanced scientific calculator. It is based in the Hewlett-Packard HP-15C calculator, but specially designed to bring up the most of your iOS devices and , at the same time, conserving the easy of use and the functionality 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. •Equal Periods Cash Flows: Solve problems where different cash flows occur at regular time intervals. •Unequal Periods Cash Flows: Solve problems where different cash flows occur at different dates. •Depreciation: Calculates depreciation with SL, SOYD, DB or MACRS methods and conventions. values at sight. •Interest Rates: 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 •Currency Exchange with on-line rates. •Percents & Margins: Calculates %Change, %Total and Business margins. >Date / Time Menu: Calculates Date and Time intervals with all values at sight. >Statistics Menu: •One-Variable Statistics: Calculations for one variable data samples. •Two-Variable Statistics: Calculations for two variables data samples. •Curve Fitting: 6 Regression models to fit a curve based on two variables data samples. •Probability: Combinations, permutations, Normal, Exponential, t-Student and Weibull probability distributions. >Scientific Menu: •Complex Numbers: Operations and functions with complex numbers. •Matrix: view, create or edit matrices with real or complex elements. •Plane Triangle: Solves a two dimensional triangle (ASA,SAS,SSA and SSS). •Spherical Triangle: Solves a triangle in a sphere’s surface (AAA,AAS,ASA,SAS,SSA and SSS). •Universal Constants: All the NIST-CODATA fundamental physical constants. •Vectors 3D: Operations and functions with vectors in Cartesian, Spherical or Cylindrical coordinates. >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. •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

Screenshots

Stack RPN Calculator4 screens
RLM4 screens

Verdict

The call

The clearest difference is review sentiment: RLM at 80% against Stack RPN Calculator's 33%. RLM also leads on rating (4.1 vs 3.5) and ratings volume (17 vs 2). Stack RPN Calculator's advantage is in-app purchases (none vs 4) 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RLM sells 4 in-app purchases, starting at $0.49 per month. Stack RPN Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RLM holds the better App Store score, 4.1 against 3.5. That said, the two scores are not equally well evidenced: RLM has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Stack RPN Calculator's written reviews are positive against 80% of RLM's.

Scorecard6 real differences · 4 level
Stack RPN Calculator versus RLM: the parameters behind the verdict, then further details
ParameterStack RPN CalculatorRLM
PriceFreeFree
Rating3.5 (2 ratings)4.1 (17 ratings) — better
Positive reviews33.3% of reviews80.0% of reviews — better
Number of ratings217 — better
Update frequency—Monthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size10 MB6 MB
Age rating4+4+
DeveloperDario BersigaR.L.M. Software

Customer experience

Stack RPN Calculator

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

RLM

All ratings17 ratings
Positive70.6%
Neutral11.8%
Negative17.6%
Written reviews15 reviews
Positive80.0%
Neutral13.3%
Negative6.7%

In-app purchases

None

Stack RPN Calculator

No in-app purchases

4 purchases

RLM

Subscriptions3
  • Monthly Subscription$0.491 Month
  • Semi-Annual Subscription$2.996 Months
  • Annual Subscription$5.991 Year
One-time1
  • One-Time Purchase$9.99

Questions

Is Stack RPN Calculator free?
Stack RPN Calculator is free to download, with no in-app purchases.
Is RLM free?
RLM is free to download, with in-app purchases available.
Which has better reviews, Stack RPN Calculator or RLM?
RLM is rated higher. Stack RPN Calculator averages 3.5 out of 5 from 2 ratings, while RLM averages 4.1 from 17 ratings.
Do Stack RPN Calculator or RLM have ads?
Neither Stack RPN Calculator nor RLM shows ads.

Other comparisons