Retro 15C app icon

Apps Like Retro 15C for iPhone and iPad

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.

by Greg Hewgill★ 4.3228 ratingsUtilitiesFreeData updated 2026-09-08

Retro 15C screenshots

Ranked alternatives

Showing 301–320 of 1,000 ranked alternatives.

  1. Construction Calculator Pro #1 app icon

    Construction Calculator Pro #1

    ORYX AI INFORMATION TECHNOLOGY - FZCO

    Calculate measurements, estimate materials, layout stairs

    Calculate dimensions, convert units, and perform angle and rafter measurements. Estimate material quantities and layout stairs. Input measurements for precise calculations. Save and reuse formulas for repeated tasks.

    ★ 4.646 ratingsUtilitiesFreeData updated 2026-09-06
  2. JicoCalc - Calculator app icon

    JicoCalc - Calculator

    Shanghai Mashang Yunxing Technology Co., Ltd.

    Convert units, calculate formulas, solve equations

    Offers basic and scientific functions for daily tasks and complex computations. It includes unit converters with 41 categories, allowing users to drag and sort units, switch base units, and perform accurate calculations.

    ★ 4.935 ratingsProductivityFreeData updated 2026-09-06
  3. ChromaSciCalc Pro app icon

    ChromaSciCalc Pro

    SimTeCon GmbH

    Calculate formulas, solve equations, graph functions

    Perform complex calculations including arithmetic, calculus, and statistical analysis. Solve equations, work with matrices, and graph functions. Store and recall formulas. Switch between scientific and engineering notation.

    ★ 0.00 ratingsEducation$4.99Data updated 2026-09-06
  1. Subnetting Practice Master app icon

    Subnetting Practice Master

    enrique caballero

    Solve problems quickly

    And reverse with over 100 questions. Solve problems using a numerical keyboard and submit answers quickly. Choose from three training modes: EASY, HARD, or . Answer within one minute in HARD and modes. Access hints for powers and binary calculations.

    ★ 4.534 ratingsEducation$4.99Data updated 2026-09-09
  2. Inflation Calculator - Calc app icon

    Inflation Calculator - Calc

    Phan Nhat Đang

    Calculate impact and track data

    Calculate impact on your money using statistical data or custom inputs. Predict future trends. View charts and comparisons. Adjust settings for personalized analysis. Export results and share data.

    ★ 4.446 ratingsFinanceFreeData updated 2026-09-06
  3. Calc app icon

    Calc

    Michael Wesemann

    Calculates with precision and style

    The app provides a simple and intuitive interface for performing calculations. It supports multiple number systems and includes various conversion tools.

    ★ 3.928 ratingsUtilitiesFreeData updated 2026-09-09
  4. LispPad Go app icon

    LispPad Go

    Matthias Zenger

    Write Scheme code and run it instantly

    A Scheme interpreter allows users to write and execute code. The console supports read-eval-print loops for interactive coding. The text editor includes syntax highlighting, smart indentation, and parenthesis matching.

    ★ 4.935 ratingsDeveloper ToolsFreeData updated 2026-09-06
  5. PyCalc app icon

    PyCalc

    Youreka Tech, LLC

    ★ 5.016 ratingsUtilitiesFreeData updated 2026-09-06
  6. Mia's Playground app icon

    Mia's Playground

    Valup Technology, Inc.

    Child's learning experience with colors shapes.

    The app offers learning activities for children aged 2 to 5, focusing on colors, shapes, and memorization. It includes games like "Find me!" and "shapes & Colors," with additional in-app purchases for more educational content.

    ★ 3.527 ratingsEducationFreeData updated 2026-09-14
  7. Xmart Calculator Mini app icon

    Xmart Calculator Mini

    XH Liu

    Calculate expressions and track results

    Perform calculations with built-in formulas and expressions. Input daily rates and work schedules to compute annual income. Simplify complex equations with fewer button presses. Track multiple scenarios by adjusting variables.

    ★ 4.922 ratingsProductivityFreeData updated 2026-09-12
  8. IntroStat - Statistics Solver app icon

    IntroStat - Statistics Solver

    Zhiyi Zhang

    Calculate stats, solve problems, access textbook

    Allows users to enter and save datasets, generate summary , calculate z-scores, and create boxplots and histograms. It includes a textbook with formulas, exercises, examples, and visualizations of key statistical concepts.

    ★ 4.924 ratingsEducationFreeData updated 2026-09-06
  9. CalcQX LITE - the calculator app icon

    CalcQX LITE - the calculator

    CodeQX

    Calculate, edit, and verify equations

    Perform calculations with a standard interface and advanced engineering functions. Input numbers and equations, use parentheses, and access scientific operations. Adjust display settings and save history for quick reference.

    ★ 4.614 ratingsUtilitiesFreeData updated 2026-09-08
  10. PepCal: Peptide Calculator app icon

    PepCal: Peptide Calculator

    A & A Design Inc.

    Calculate concentrations and ratios

    Calculate reconstitution volumes using water estimates. Determine mixing ratios for various sequences. Perform bacteriostatic water calculations for stability. Input molecular weights and concentrations for accurate results.

    ★ 4.336 ratingsUtilities$2.99Data updated 2026-10-02
  11. 1 Minute Mental Arithmetic app icon

    1 Minute Mental Arithmetic

    Hirokazu Uno

    Calculate daily to train your brain

    Helps users practice daily with 1- exercises. Tracks progress over time. Teaches basic calculations for children. Includes interactive drills and instant feedback.

    ★ 5.028 ratingsEducationFreeData updated 2026-09-06
  12. iCalc: Scientific Calculator app icon

    iCalc: Scientific Calculator

    Stephen Elrod

    Calculate, practice, and learn math

    Solve complex math problems with advanced functions and calculations. Practice equations with interactive exercises. Customize themes and adjust settings for personalized use. Track progress and review solutions for better understanding.

    ★ 5.02 ratingsEducationFreeData updated 2026-09-06
  13. LXVII app icon

    LXVII

    Nick Tamburri

    HP-67 RPN calculator emulator for OS X.

    The app emulates the HP-67 RPN programmable calculator. It offers multiple active calculators, full memory visibility, and a paper tape register with various modes.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-20

How we rank alternatives

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