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 241–260 of 1,000 ranked alternatives.

  1. Calculate: Advanced Calculator app icon

    Calculate: Advanced Calculator

    Joe Rickerby

    Expressions and simplify fractions

    Perform complex calculations with a scientific interface. Enter expressions in natural order. Simplify results with symbolic computation. Swipe to review previous calculations. Track history and reuse past entries.

    ★ 3.928 ratingsProductivity$1.99Data updated 2026-09-08
  2. Scientific Calculator * app icon

    Scientific Calculator *

    TOWER OF HANOI SOFTWARE COMPANY LIMITED

    Calculate, convert, exchange, solve

    Solve math problems with basic and complex calculations. Convert units and exchange currencies. Use fractions and square root functions. Perform calculations quickly and accurately.

    ★ 4.612 ratingsProductivityFreeData updated 2026-10-10
  3. All-In-One: Calculator app icon

    All-In-One: Calculator

    DREAMCORE SRL

    Calculate, convert, and solve problems

    Perform calculations for arithmetic, percentages, proportions, and unit conversions. Convert currencies, measure areas and volumes. Solve complex equations and basic math problems. Switch between different calculation modes and units effortlessly.

    ★ 5.05 ratingsProductivityFreeData updated 2026-09-06
  1. Data Explorer app icon

    Data Explorer

    A&X Analytics, LLC

    Explore datasets, find patterns, analyze variables

    Analyze datasets by importing files or entering manually. Apply filters to focus on specific rows. View key statistics and visualizations for each variable. Understand results with plain English explanations of statistical methods.

    ★ 4.912 ratingsProductivity$9.99Data updated 2026-09-08
  2. Calculator : Scientific Calculator & converter app icon

    Calculator : Scientific Calculator & converter

    CAT VIET SOFTWARE DEVELOPMENT & MEDIA JSC

    Calculate with formulas and units

    Calculate using functions including sin, cos, tan, and their inverses. Convert units with 136 converters. Access daily updated currency exchange rates. Perform algebraic calculations with 800+ formulas. Switch between degrees, radians, and grads.

    ★ 5.03 ratingsUtilitiesFreeData updated 2026-09-13
  3. Eigenmath app icon

    Eigenmath

    George Weigt

    Symbolic computation and mathematical visualization.

    The app offers a unified environment for symbolic manipulation, numerical computation, and visualization. It supports a wide range of mathematical operations, including symbolic algebra, multivariable calculus, and matrix operations.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-10-07
  4. Basic Calculator Biz app icon

    Basic Calculator Biz

    Imple, Inc.

    Calculate and view formulas clearly

    Performs arithmetic operations including addition, subtraction, multiplication, and division. Displays full calculation formulas for error detection. Includes standard functions comparable to commercial calculators.

    ★ 5.05 ratingsUtilitiesFreeData updated 2026-09-12
  5. Art of Stat: Regression app icon

    Art of Stat: Regression

    Bernhard Klingenberg

    Fit models and display inference results

    Create scatterplots and fit simple or multiple linear, logistic, or exponential models. Display standard errors, confidence intervals, and P-values for model parameters. Include categorical predictors and two-way interactions.

    ★ 4.720 ratingsEducationFreeData updated 2026-09-06
  6. BA Plus Pro Calculator app icon

    BA Plus Pro Calculator

    国栋 焦

    Calculate financial formulas and values

    Emulates the TI BA II Plus with the same layout and functions. Users can perform financial calculations, solve time value of money problems, and view all variables simultaneously.

    ★ 3.73 ratingsUtilities$1.99Data updated 2026-09-21
  7. My Physics Calculator app icon

    My Physics Calculator

    V PUGAZHENTHI

    Calculate and engineering parameters

    Allows users to perform calculations for and engineering parameters. It includes formulas and definitions for each calculation. Users can compute force, friction, centripetal force, work, power, displacement, and more.

    ★ 4.344 ratingsUtilities$2.99Data updated 2026-09-09
  8. 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
  9. Intuitive Memory Calculator app icon

    Intuitive Memory Calculator

    Sri Dama

    Store numbers, retrieve numbers, calculate results

    Allows users to store and retrieve numbers using multiple slots. Tap a slot to save a number and tap again to recall it. Swipe up and tap Delete to clear a slot. Access 25 recent calculations for quick reference.

    ★ 4.557 ratingsProductivityFreeData updated 2026-09-14
  10. 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
  11. GeoGebra Classic app icon

    GeoGebra Classic

    GeoGebra GmbH

    Plot functions and solve equations

    Graphing Calculator allows plotting functions with sliders and solving equations. Geometry Calculator enables creating interactive geometric constructions. 3D Calculator graphs functions and surfaces.

    ★ 3.078 ratingsEducationFreeData updated 2026-09-08
  12. Matrix Operations app icon

    Matrix Operations

    Vitalii Solovei

    Solve systems with methods

    Perform including solving systems of linear equations via Gaussian elimination, Cramer's rule, Gauss-Jordan, inverse , and Montante methods.

    ★ 4.813 ratingsEducationFreeData updated 2026-09-06
  13. Mortgage Calculator 2 app icon

    Mortgage Calculator 2

    Simon Burgess

    Calculate mortgages in real time

    Calculate payments in real time with principal, interest, and term inputs. View detailed summaries and bar charts of the entire term. Adjust values instantly with quick change buttons. Select from multiple themes for customization.

    ★ 4.992 ratingsFinanceFreeData updated 2026-09-06
  14. Math AI - The Math Solver App app icon

    Math AI - The Math Solver App

    Jignesh Thakkar Huf

    Snap problems and get step-by-step solutions

    Solve problems by snapping photos. Receive step-by-step explanations and multiple solving methods. Access interactive graphs and a scientific calculator. View how-to animations for each solution.

    ★ 4.379 ratingsEducationFreeData updated 2026-09-06

How we rank alternatives

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