i41CX app icon

Apps Like i41CX for iPhone and iPad

Calculate with RPN and scientific functions

Perform complex calculations using RPN input. Access a wide range of scientific and programming functions. Customize skins and adjust key feedback settings. Input and edit equations with precise control. Save and retrieve programs for repeated use.

by Antonio Lagana★ 4.747 ratingsProductivity$7.99Data updated 2026-11-09

i41CX screenshots

Ranked alternatives

Showing 61–80 of 1,000 ranked alternatives.

  1. RPN-45 SD app icon

    RPN-45 SD

    Willy Kunz

    Calculate with scientific precision and enhanced functions

    Simulate the HP-45 scientific calculator with photo-realistic visuals and original LED or LCD display. Print calculations, animate keys with sound and feedback, and replicate the calculator's computation times.

    ★ 4.315 ratingsProductivity$1.99Data updated 2026-09-08
  2. RPN Calculus app icon

    RPN Calculus

    Thomas Braun

    Scientific RPN calculator for iPad.

    The app performs calculations with up to 15 digits of precision and supports a number range from -1E127 to 1E127. It includes a database of over 120 scientific constants that users can extend.

    ★ 4.01 ratingsUtilities$1.99Data updated 2026-09-14
  3. Countdown° app icon

    Countdown°

    rongsheng li

    Sort events, set reminders, share updates

    Set reminders for daily events and custom categories. Sort and share events. Customize reminder times and date settings. Repeat events with set cycles. Backup events to iCloud. Display completed events on the home screen.

    ★ 4.824,342 ratingsUtilitiesFreeData updated 2026-09-09
  1. Construction Master 5 Calc app icon

    Construction Master 5 Calc

    Calculated Industries, Inc.

    Try before you buy with free trial

    Calculate measurements in feet, inches, and fractions. Convert between units and perform complex calculations. Store frequently used values and recall previous entries. Adjust for slope and pitch. Export results to email or cloud storage.

    ★ 4.813,173 ratingsUtilitiesFreeData updated 2026-09-08
  2. Sci:Pro Calculator app icon

    Sci:Pro Calculator

    Jerry Montgomery

    Calculate, share, and switch modes

    Offers basic, scientific, and programmer modes with history views. Users can share results via email or copy-paste values between apps. The supports iPhone, iPad, and iPod Touch devices.

    ★ 4.83,858 ratingsUtilitiesFreeData updated 2026-09-08
  3. MathU 12D Financial Calculator app icon

    MathU 12D Financial Calculator

    Creative Creek, LLC

    Financial calculator with RPN entry

    The app offers a financial calculator with RPN entry and functions matching the HP-12C. It features visible financial registers, a two-line display, and program lines showing function names for easier use.

    ★ 4.8115 ratingsFinance$4.99Data updated 2026-11-07
  4. HP Prime Pro app icon

    HP Prime Pro

    MORAVIA Consulting, spol. s r.o.

    Solve math problems and explore graphs

    Solve equations and inequalities with advanced graphing. Trace functions and analyze intersections. Perform calculations, store variables, and use built-in math functions. Access a scientific calculator and explore interactive math concepts.

    ★ 3.281 ratingsEducation$24.99Data updated 2026-09-23
  5. Calculator⁻ app icon

    Calculator⁻

    Unicom TOV

    Calculate, record, and recall results

    Perform basic math operations including addition, subtraction, multiplication, division, and percentage. Store and retrieve calculation results. Customize number, operator, parenthesis, and result colors. Enable touch sound for feedback.

    ★ 4.43,607 ratingsUtilitiesFreeData updated 2026-09-14
  6. Janus Calculator app icon

    Janus Calculator

    Geoffrey Domm

    Standard and RPN programmable calculators.

    The app provides two calculators: one using Standard Notation and another using Reverse Polish Notation. Both calculators are programmable and include finance and scientific functions, plus 45 physical constants.

    ★ 2.01 ratingsProductivityFreeData updated 2026-09-14
  7. Calculator Max app icon

    Calculator Max

    Pavel Kozarek

    Calculations made easy in one app.

    The app offers basic and scientific calculators with a history tape. Users can make notes and draw ideas on iPad.

    ★ 4.31,925 ratingsUtilitiesFreeData updated 2026-09-13
  8. Feet & Inches Tape Calculator app icon

    Feet & Inches Tape Calculator

    Tue Nguyen Minh

    Calculate and with a measure display

    Convert measurements between , , and centimeters. Input fractions or decimals for precise calculations. View results on a visual measure display. Perform addition, subtraction, multiplication, and division with measurement values.

    ★ 4.49,262 ratingsUtilitiesFreeData updated 2026-09-15
  9. Scientific Calculator+ HD app icon

    Scientific Calculator+ HD

    Nixus Development

    A convenient scientific calculator app.

    The app provides standard scientific functions like roots, powers, and logarithms. It also includes features such as graph drawing, multiple memory blocks, constants, notes, and a history log.

    ★ 4.5494 ratingsProductivityFreeData updated 2026-10-24
  10. Calc Pro HD – iPad Calculator app icon

    Calc Pro HD – iPad Calculator

    Panoramic Software Inc.

    Calculate, edit, and track finances

    Perform complex calculations with scientific, financial, and unit conversion tools. Access 10 financial worksheets for budgeting and planning. Switch between landscape and portrait modes. Save and export calculation results.

    ★ 4.71,468 ratingsUtilitiesFreeData updated 2026-09-08
  11. Vintage-45 app icon

    Vintage-45

    Willy Kunz

    Calculate with HP-45 precision

    Simulate the HP-45 scientific calculator with photo-realistic design and animated keys. Perform all original functions and operations. Access a secret stopwatch. Adjust processing speed between real-time and simulated.

    ★ 4.819 ratingsProductivity$0.99Data updated 2026-10-25
  12. CALC Smart Calculator ± app icon

    CALC Smart Calculator ±

    QApps LLC

    Calculate, convert, and solve equations

    Perform complex calculations with scientific formulas and unit conversions. Access calculation history via Spotlight and 3D Touch. Use widgets for quick access and history integration. Sync with Apple Watch for notifications and basic calculations.

    ★ 4.82,367 ratingsUtilitiesFreeData updated 2026-09-08
  13. DB48X app icon

    DB48X

    Christophe de Dinechin

    Compute with arbitrary precision

    Perform complex calculations with RPN and algebraic input. Handle arbitrary precision, complex numbers, and multiple bases. Work with vectors, matrices, and text. Solve equations symbolically and numerically. Graph functions and plot data.

    ★ 4.85 ratingsProductivity$4.99Data updated 2026-10-30
  14. Ncalc - Graphing Calculator 84 app icon

    Ncalc - Graphing Calculator 84

    Tran Duy

    Graph functions and trace curves

    Allows users to plot functions, polar, and parametric graphs. Users can edit equations in the graph editor and view graphs. Features include tracing, finding intersections and extrema, displaying derivatives, and adding tangents.

    ★ 4.65,015 ratingsEducationFreeData updated 2026-09-24

How we rank alternatives

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