RPN-55 SD app icon

Apps Like RPN-55 SD for iPhone and iPad

by Willy Kunz★ 5.08 ratingsProductivity$1.99Data updated 2026-10-11

RPN-55 SD screenshots

Ranked alternatives

Showing 201–220 of 1,000 ranked alternatives.

  1. r.Calc app icon

    r.Calc

    Nicolas Jorand

    A simple calculator for daily uses.

    The app provides a calculator with a four-level visible stack and a total of one hundred positions. It includes operations for plus, minus, multiply, divide, opposite, and inverse, with keyboard errors notified by vibration.

    ★ 4.03 ratingsUtilities$0.99Data updated 2026-09-10
  2. 15C Scientific Calculator app icon

    15C Scientific Calculator

    Vicinno Soft LLC

    Calculate with precise RPN math

    Emulates HP 15C RPN functionality with precise mathematical calculations. Users can solve equations, perform numerical integration, handle complex numbers, and execute matrix operations. It supports root finding and hyperbolic functions.

    ★ 0.00 ratingsUtilities$14.99Data updated 2026-09-08
  3. HVAC & Sheet Metal Calculator app icon

    HVAC & Sheet Metal Calculator

    Calculated Industries, Inc.

    Calculate duct offsets and angles

    Performs X, Y, R radius calculations and theta measurements. It includes -specific functions for ducting offsets and angle computations. Features dimensional math, geometry, and trigonometry tools for precise construction calculations.

    ★ 4.955 ratingsUtilitiesFreeData updated 2026-09-06
  1. FX Calculus Problem Solver app icon

    FX Calculus Problem Solver

    Euclidus Inc

    Solve problems instantly

    Solve problems with step-by-step solutions. Input equations for automatic solving and animated explanations. Access over 1,000 sample problems. Use scientific and graphing calculators. Track progress and review detailed solutions.

    ★ 3.478 ratingsEducationFreeData updated 2026-09-09
  2. Calctan app icon

    Calctan

    Jorge Lozada

    Calculate complex equations

    Perform complex calculations with scientific functions, trigonometry, and unit conversions. Customize themes, adjust display settings, and save frequently used formulas. Export results and share calculations directly.

    ★ 4.561 ratingsUtilitiesFreeData updated 2026-09-16
  3. BrewRatio app icon

    BrewRatio

    Andrew Bangs

    Brew coffee with precise ratios

    Calculate coffee brewing ratios with adjustable variables. Convert units between grams, milliliters, and ounces. Set and track brewing time with a built-in timer.

    ★ 4.736 ratingsFood & DrinkFreeData updated 2026-09-12
  4. Pascal: 3-in-1 Calculator app icon

    Pascal: 3-in-1 Calculator

    Andrew Wei

    Calculate, graph, code with precision

    Perform complex calculations with scientific, graphing, and programmer modes. View graphs and equations. Use the Today widget for quick access. Unlock advanced features with in- purchases. Reinstall to reset trial periods.

    ★ 4.023 ratingsProductivityFreeData updated 2026-09-09
  5. CALC 1 Programmable Calculator app icon

    CALC 1 Programmable Calculator

    Roger Carey

    Create calculators with AI-generated functions

    Customize calculators for precise calculations. Create function calculators using AI-generated JavaScript code. Add functions to the list and test them before use. Perform complex computations with formulas.

    ★ 4.69 ratingsUtilities$9.99Data updated 2026-09-17
  6. DayCalc - Note Calculator app icon

    DayCalc - Note Calculator

    良峰 侯

    Calculate, convert, and share results

    Offers a standard, scientific, and fractions with over 30 scientific operations. Users can add notes to calculation history and share entries.

    ★ 4.7126 ratingsUtilitiesFreeData updated 2026-09-08
  7. x36 app icon

    x36

    Carl Cook

    ★ 5.02 ratingsUtilities$0.99Data updated 2026-09-16
  8. DB50X app icon

    DB50X

    Christophe de Dinechin

    ★ 5.08 ratingsProductivity$9.99Data updated 2026-10-13
  9. Construction Calc Pro Ads app icon

    Construction Calc Pro Ads

    Snappy Appz Inc.

    Calculate feet, inches, and fractions

    C- Pro allows calculations in feet, inches, and fractional inches. It includes modules for material estimates, crown moulding, conversions, area, volume, and arc calculations.

    ★ 2.551 ratingsUtilitiesFreeData updated 2026-09-09
  10. Matrix Solver Step by Step app icon

    Matrix Solver Step by Step

    Yuri Morozov

    Solve matrices and show steps

    Solves matrices with calculations like inversion, determinant, and decomposition. Explains each of algorithms. Offers interactive geometric visuals. Includes tutorials with proofs and links to related topics for Linear Algebra concepts.

    ★ 4.863 ratingsEducationFreeData updated 2026-09-06
  11. Scientific++ app icon

    Scientific++

    Behzad Dogahe

    Scientific calculations with added functionality.

    The app shows expressions as users enter them and keeps a history of calculations. It performs fraction and angle conversions, solves equations, and converts between coordinate systems.

    ★ 4.561 ratingsUtilities$2.99Data updated 2026-09-23

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.