Multi Puzzle Solver vs RLM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Multi Puzzle Solver
Instantly solve newspaper and magazine puzzles by entering digits. This app automatically resolves Sudoku variants, Futoshiki, and Binary puzzles of various sizes.
- Sudoku solver (9x9)
- Sudoku-X solver (9x9)
- Inequality Sudoku solver (9x9)
- Futoshiki solver (4x4 to 9x9)
- Binary solver (4x4 to 14x14)
- Instant puzzle solutions
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Stuck on a puzzle in a newspaper or magazine? Enter the digits into the app and get the solution instantly! This program is designed to automatically solve puzzles of following types: * Sudoku (9x9) * Sudoku-X (9x9) * Inequality Sudoku (9x9) * Futoshiki (4x4, 5x5, 6x6, 7x7, 8x8 and 9x9) * Binary (from 4x4 to 14x14)
RLM
This app is a scientific and programmable calculator designed for science and engineering, replicating the functionality of the HP-11C. It offers extensive features for finance, business, statistics, complex numbers, and unit conversions, with a programmable interface for custom calculations.
- Finance calculations (amortization, bond price, Black-Scholes)
- Business functions (break-even, currency exchange)
- Statistical analysis (regression, probability distributions)
- Scientific functions (complex numbers, logarithms, trigonometry)
- Unit and currency conversions
- Programmable interface for custom scripts
- Equation solver
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The RLM-11C+ application is a general purpose calculator with a special focus science and engineering. It is based in the Hewlett-Packard HP-11C 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. •Equal Periods: Calculations with Cash Flows occurring at regular time intervals. •Unequal Periods: Calculations with Cash Flows occurring at arbitrary dates. •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 •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. •Logarithms, Trigonometric, Hyperbolic and Number Alteration functions. •Triangle Solution: Solves a Plane & Spherical triangles. •3D Vectors: Operations and functions with vectors in Cartesian, Spherical or Cylindrical coordinates. •Universal Constants: All the NIST-CODATA physical constants values and descriptions. •Units Conversion: Physical units conversion completely customizable. >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.
Screenshots
Verdict
The clearest difference is price: RLM at Free against Multi Puzzle Solver's $2.99. RLM also leads on update cadence (every 5 weeks vs every 22 months). Multi Puzzle Solver's advantage is rating (5.0 vs 3.1) and in-app purchases (none vs 4). On review sentiment, ratings volume, 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
RLM is free to download; Multi Puzzle Solver costs $2.99 up front. RLM sells 4 in-app purchases, starting at $0.49 per month. Multi Puzzle Solver asks for nothing beyond the download.
Multi Puzzle Solver holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews split almost evenly too, at 67% and 67% positive.
Multi Puzzle Solver ships an update every 22 months, RLM every 5 weeks. The most recent releases landed on September 22, 2026 and September 30, 2026 respectively.
| Parameter | Multi Puzzle Solver | RLM |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (4 ratings) — better | 3.1 (7 ratings) |
| Positive reviews | 66.7% of reviews | 66.7% of reviews |
| Number of ratings | 4 | 7 — better |
| Update frequency | Every 22 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Aliaksandr Uvarau | R.L.M. Software |
Customer experience
Multi Puzzle Solver
RLM
In-app purchases
Multi Puzzle Solver
No in-app purchases
RLM
- Monthly Subscription$0.491 Month
- Semi-Annual Subscription$2.996 Months
- Annual Subscription$5.991 Year
- Lifetime Purchase$9.99









