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 341–360 of 1,000 ranked alternatives.

  1. GST Calculator - India app icon

    GST Calculator - India

    Mobilogy Software Services LLP

    Calculate GST and perform math operations

    Calculate GST on sales or purchases by entering the transaction amount and GST rate. Perform basic mathematical operations. View calculated results instantly.

    ★ 4.816 ratingsUtilitiesFreeData updated 2026-09-21
  1. Oscilyzer app icon

    Oscilyzer

    Stefan Robl

    Analyze, visualize, and synthesize audio signals

    Oscilloscope mode displays real-time waveforms with automatic and single-shot triggering. Measures frequency, period, and amplitude automatically or manually. Spectrum analyzer mode identifies frequency components and amplitude levels.

    ★ 4.910 ratingsProductivityFreeData updated 2026-09-10
  2. Statistics Calculator Lite app icon

    Statistics Calculator Lite

    KBIC International Limited

    Calculate statistical measures of numbers.

    The app calculates statistical measures for a set of numbers. It provides the number of terms, sum, mean, mode, median, range, and standard deviation.

    ★ 2.418 ratingsEducationFreeData updated 2026-10-15
  3. Calculator ⁺⁻ app icon

    Calculator ⁺⁻

    MATRIKS GRUP, TOV

    Calculate, customize, and solve equations

    Customize the 's appearance with color changes. Switch between basic and scientific modes with over 30 operations. View calculation history and equations. Perform calculations with precision up to 75 significant digits.

    ★ 4.830 ratingsUtilitiesFreeData updated 2026-09-06
  4. Kalkulilo (Calculator) app icon

    Kalkulilo (Calculator)

    Alexander Clauss

    Calculates with multiple modes and customizable settings

    The app provides multiple calculation modes for various mathematical tasks. The app includes customizable interfaces and widgets for convenient use across devices.

    ★ 4.529 ratingsProductivity$2.99Data updated 2026-11-03
  5. CountQuick! app icon

    CountQuick!

    Danylo Korotin

    Solve math problems and track progress

    Practice mental math with customizable problem types including addition, subtraction, multiplication, fractions, and division. Set numerical ranges, session duration, and difficulty levels. Track progress and review results.

    ★ 5.011 ratingsEducationFreeData updated 2026-09-06
  6. Plottron app icon

    Plottron

    Billy Lin

    Graph functions and visualize complex maps

    Graphs 2D and 3D functions including parametric and polar coordinates. Supports implicit graphing and complex map visualizations with domain coloring.

    ★ 4.812 ratingsUtilitiesFreeData updated 2026-09-10
  7. Calculator For HD - app icon

    Calculator For HD -

    俊杰 刘

    Calculate with personalized themes and scientific tools

    Perform calculations with a scientific for advanced math. Customize themes and colors. Use split-screen mode for multitasking. Record calculation steps automatically. View historical records for data retrieval.

    ★ 4.115 ratingsUtilitiesFreeData updated 2026-09-06
  8. Visual Trig Func app icon

    Visual Trig Func

    yukihiro fujita

    Understand trigonometric functions visually and easily.

    The app provides visual representations of trigonometric functions, including wave graphs. Users can easily calculate and confirm the values of sine, cosine, tangent, cosecant, secant, and cotangent.

    ★ 1.02 ratingsEducationFreeData updated 2026-10-14
  9. Quantum System Engineer app icon

    Quantum System Engineer

    Iryna Loshchyts

    Explore concepts and math with interactive tools

    Systems offers tools for matrix manipulation, eigenvalue analysis, and state visualization. Users can explore transformations and linear algebra concepts through interactive simulations and structured educational content.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  10. CMCalc app icon

    CMCalc

    William David

    Calculate decimal, binary, octal, and hexadecimal values

    Perform decimal, binary, octal, and hexadecimal arithmetic. Convert between number systems. Apply binary logic functions. Use parentheses for operator grouping. Input hexadecimal values using A-F keys.

    ★ 4.56 ratingsUtilitiesFreeData updated 2026-09-09

How we rank alternatives

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