Comparison

RLM vs 10bII+

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

Head to head
About

RLM

This finance and business calculator emulates the HP-12C Platinum, offering a comprehensive suite of tools for financial analysis, business calculations, statistics, and scientific functions. It allows for loan amortization, bond pricing, option valuation, currency exchange, and program creation, all within an intuitive iOS interface.

Highlights
  • Finance and business calculations
  • Loan amortization and bond pricing
  • Black-Scholes options valuation
  • Currency exchange with online rates
  • Statistical analysis
  • Scientific and unit conversions
  • Program creation and equation solving
Features
Read full description

The RLM-12PX application is a general purpose calculator with a special focus in finance and business. It is based in the Hewlett-Packard HP-12C Platinum 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 functions 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. •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: 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.

About

10bII+

This app is a financial calculator that replicates the functionality of a popular physical calculator. It offers basic functions for free, with advanced financial worksheets available through a one-time purchase. Features include interactive prompts and register views to help users understand and remember calculations.

Highlights
  • Full HP 10bII+ functionality
  • Interactive prompts and recipes
  • Register views for stored values
  • Basic calculator functions included
  • Advanced financial worksheets via IAP
  • Customizable recipe recording
Features
Read full description

The 10bII+ is a complete reimplementation of the full functionality of the popular HP 10bII+ financial calculator. In addition to providing 10bII+'s look & feel and functionality, we have modernized the app with features such as recipes, interactive prompts, and register views. This free version provides basic calculator functions, Math, Trigonometry, Memory, Interest Conversion, and Date functions. A one-time In-App-Purchase is required to access the Time-Value-of-Money (TVM), Amortization, Cash Flow, Bond, Depreciation, Statistics, Profit Margin, and Breakeven worksheets. The 10bII+ modern addresses two critical issues for the user: (i) knowing what is stored in each of the calculator's internal registers, (ii) remembering the exact key sequences for getting specific calculations done. The register views, accessible in the main screen, provides visibility into various register groups. You can switch between different groups of registers (such as Financial, Cash Flow, Bond, etc.), and inspect stored values. The recipes which you can record and store remove the burden of remembering the exact keystroke sequence for your tasks. You simply select a pre-recorded recipe (builtin or your own) and run. When running a recipe, the app visually prompts you with the keystrokes to press and guides you along in getting the results. The app comes with 25 built-in recipes and allows you to add/record/edit/delete your own recipes. The convenient register view on the screen allows you to view register contents as your operations proceed.

Screenshots

RLM4 screens
10bII+4 screens

Verdict

The call

The clearest difference is rating: RLM at 4.3 against 10bII+'s 1.9. RLM also leads on update cadence (monthly vs every 15 months) and review sentiment (33% vs 10%). 10bII+'s advantage is iOS requirement (12.0 vs 15.0). On price, ratings volume, ads and in-app purchases 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 and 10bII+ sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

RLM holds the better App Store score, 4.3 against 1.9. Both are backed by a comparable volume of ratings — 4 and 9 respectively. Written reviews point the same way: 33% of RLM's written reviews are positive against 10% of 10bII+'s.

UpkeepUpdate frequency

RLM ships an update monthly, 10bII+ every 15 months. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
RLM versus 10bII+: the parameters behind the verdict, then further details
ParameterRLM10bII+
PriceFreeFree
Rating4.3 (4 ratings) — better1.9 (9 ratings)
Positive reviews33.3% of reviews — better10.0% of reviews
Number of ratings49 — better
Update frequencyMonthly — betterEvery 15 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size6 MB15 MB
Age rating4+4+
DeveloperR.L.M. SoftwareAnishu, Inc.

Customer experience

RLM

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

10bII+

All ratings9 ratings
Positive22.2%
Neutral0.0%
Negative77.8%
Written reviews10 reviews
Positive10.0%
Neutral0.0%
Negative90.0%

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
  • Lifetime Purchase$9.99
1 purchases

10bII+

One-time1
  • 10bII+: Full Functionality$5.99

Questions

Is RLM free?
RLM is free to download, with in-app purchases available.
Is 10bII+ free?
10bII+ is free to download, with in-app purchases available.
Which has better reviews, RLM or 10bII+?
RLM is rated higher. RLM averages 4.3 out of 5 from 4 ratings, while 10bII+ averages 1.9 from 9 ratings.
Do RLM or 10bII+ have ads?
Neither RLM nor 10bII+ shows ads.
Which is updated more often, RLM or 10bII+?
RLM ships an update monthly, and 10bII+ every 15 months. Most recently, RLM was updated on October 24, 2026 and 10bII+ on October 24, 2026.

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