r.Calc app icon

Apps Like r.Calc for iPhone and iPad

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.

by Nicolas Jorand★ 4.03 ratingsUtilities$0.99Data updated 2026-09-10

r.Calc screenshots

Ranked alternatives

Showing 61–80 of 1,000 ranked alternatives.

  1. 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 2026-10-24
  2. Calculation! app icon

    Calculation!

    Paul Koomey

    Calculate, copy, and share expressions

    Calculation allows users to perform scientific computations with trigonometric and inverse trigonometric functions. Users can toggle between degree and radian modes. Expressions and results can be copied with a double tap.

    ★ 5.088 ratingsUtilitiesFreeData updated 2026-09-06
  3. i41CX+ app icon

    i41CX+

    Antonio Lagana

    Programmable, expandable, calculate

    Perform complex calculations using RPN and CAS. Run custom programs and modules. Print or plot results via thermal printer. Import/export data in various formats. Access keyboard overlays and iOS features for enhanced functionality.

    ★ 4.8108 ratingsProductivity$24.99Data updated 2026-10-22
  1. Retro 15C app icon

    Retro 15C

    Greg Hewgill

    Calculate complex numbers and matrices

    Perform complex number calculations and trigonometric functions. Handle matrix operations and numerical root finding. Calculate integrals and statistical values including linear regression. Write and execute custom programs. No ads or in- purchases.

    ★ 4.3228 ratingsUtilitiesFreeData updated 2026-09-08
  2. Calculator Advanced app icon

    Calculator Advanced

    Mert Can Kus

    Save formulas, enter variables, calculate results

    Allows users to save formulas for repeated use. Enter variables to recalculate results without rewriting formulas. Supports trigonometric functions, logarithms, factorials, and permutations. View saved formulas and variables for easy access.

    ★ 4.496 ratingsProductivity$0.99Data updated 2026-09-06
  3. d20 Calculator app icon

    d20 Calculator

    Leo Mortero

    Calculate dice rolls instantly and save frequent

    Calculate dice rolls for tabletop games with support for simple and complex formulas. Enter expressions like "1d4" or "(3d100 + 5d7) x 3d2". Save frequently used rolls with labels. Perform arithmetic operations on dice results.

    ★ 4.7343 ratingsProductivityFreeData updated 2026-09-09
  4. 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
  5. PCalc Lite app icon

    PCalc Lite

    TLA Systems Ltd.

    Calculate with advanced scientific functions

    Perform complex calculations with support for hexadecimal, octal, and binary. Use RPN mode and multi-line display. Access unit conversions, constants, and scientific notation. View a paper tape and use multiple undo/redo functions.

    ★ 4.4214 ratingsUtilitiesFreeData updated 2026-09-08
  6. Amortization Loan Calculator app icon

    Amortization Loan Calculator

    JC Accounting & Innovative Technologies, Inc

    Calculate payments and schedule

    Calculate payments and generate repayment schedules. Share schedules via email. Add extra payments to reduce payoff time. Graph repayment timelines. Track total interest paid. Save multiple loans for quick access.

    ★ 4.71,126 ratingsFinanceFreeData updated 2026-09-16
  7. 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
  8. RPN-34 CE app icon

    RPN-34 CE

    Willy Kunz

    Simulate HP-34C calculator

    Simulate the HP-34C calculator with photo-realistic graphics. Perform integration and root finding calculations. Access extended functions and improved speed. Navigate using on-screen buttons and keyboard input. Save and recall values.

    ★ 5.014 ratingsProductivity$1.99Data updated 2026-09-16
  9. Large Number Calculator app icon

    Large Number Calculator

    Dietmar Herbert Schwarz Webers

    Perform basic calculations easily on screen.

    The app offers a large number pad and result display for performing basic calculations. Users can add, subtract, multiply, divide, and calculate percentages.

    ★ 1.02 ratingsUtilities$0.99Data updated 2026-10-06
  10. Calculator HD: Big Buttons app icon

    Calculator HD: Big Buttons

    Studio Zebra

    Calculate with large, easy-to-read numbers

    A for with a large, easy-to-read display. Perform basic arithmetic operations. Use user-friendly controls for quick calculations.

    ★ 4.51,938 ratingsUtilitiesFreeData updated 2026-09-10
  11. RPN-70 SD app icon

    RPN-70 SD

    Willy Kunz

    Simulate financial calculations

    Simulate the HP-70 financial calculator with loan amortization, saving plans, depreciation, and storage registers. View stack contents in popup windows. Perform financial calculations with enhanced accuracy and additional storage options.

    ★ 4.711 ratingsProductivityFreeData updated 2026-09-08
  12. 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
  13. Fraction Calculator PRO #1 app icon

    Fraction Calculator PRO #1

    DigitAlchemy LLC

    Calculate fractions, add, subtract, multiply, divide

    Calculate fractions by adding, subtracting, dividing, and multiplying. Convert fractions to decimals. Adjust recipe quantities for different serving sizes. Review math problems quickly and accurately.

    ★ 4.9752 ratingsProductivity$3.99Data updated 2026-10-23

How we rank alternatives

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