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 21–40 of 1,000 ranked alternatives.

  1. Calculator # app icon

    Calculator #

    An Truong

    Calculate, graph, and solve equations

    Perform complex calculations with a powerful math core and algebra engine. Display mathematical expressions with proper formatting. Solve equations, graph functions, and convert units. Access scientific, financial, and programming calculators.

    ★ 4.635,938 ratingsUtilitiesFreeData updated 2026-09-08
  2. Symbolab - AI Math Solver App app icon

    Symbolab - AI Math Solver App

    Eqsquest Ltd

    Solve problems with step-by-step guidance

    Solve problems by typing or snapping a photo. Get step-by-step solutions for pre-algebra, calculus, trigonometry, and more. Calculate derivatives, integrals, equations, and fractions. Graph functions and analyze results.

    ★ 4.626,156 ratingsEducationFreeData updated 2026-09-09
  3. Calculator for iPad! app icon

    Calculator for iPad!

    7th Gear

    Customize appearance and layout

    Lets users switch between basic and scientific modes with over 30 operations. Customize leather color and background texture on iPad. Use portrait or landscape orientation on iPad. Take notes or draw on the screen.

    ★ 4.761,050 ratingsUtilitiesFreeData updated 2026-09-08
  1. 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
  2. Calculator Air: AI Math Solver app icon

    Calculator Air: AI Math Solver

    AIR APPS SYSTEMS, UNIPESSOAL, LDA

    Solve problems instantly

    Solve problems with a scientific supporting arithmetic to calculus. Use photo to scan and solve equations. Access an AI homework helper for step-by-step solutions. Perform unit conversions and function calculations.

    ★ 4.783,588 ratingsUtilitiesFreeData updated 2026-09-11
  3. ▸ Calculator + app icon

    ▸ Calculator +

    CAT VIET SOFTWARE DEVELOPMENT & MEDIA JSC

    Calculate, convert, and solve equations

    Perform complex calculations using 12 built-in calculators including scientific, financial, and unit conversion tools. Input formulas with three modes: standard, string, and RPN.

    ★ 4.7899 ratingsUtilities$1.99Data updated 2026-09-08
  4. 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
  5. Calculate84 app icon

    Calculate84

    Century Light LLC

    Graph functions and solve equations

    Create and analyze mathematical functions with interactive graphing. Manipulate equations, zoom, and pan graphs. Access a clean interface with logically placed tools. View detailed error messages and scroll through results without navigation clutter.

    ★ 4.854,322 ratingsEducationFreeData updated 2026-10-30
  6. PowerOne calculator app icon

    PowerOne calculator

    Crafty Weasel, LLC

    Calculate, save, and share formulas

    Perform complex calculations with customizable formulas and equation solving. Save and reuse calculations. Convert units and manage multiple profiles. Export results and access advanced functions like matrix operations and statistical analysis.

    ★ 4.6803 ratingsUtilitiesFreeData updated 2026-09-11
  7. PCalc app icon

    PCalc

    TLA Systems Ltd.

    Calculate, convert, and program with precision

    Perform complex calculations with scientific, engineering, and hexadecimal modes. Use RPN and multi-line display. Convert units and access constants. Undo and redo actions. Sync with Apple Watch for on-the-go calculations.

    ★ 4.7779 ratingsUtilities$9.99Data updated 2026-11-02
  8. Tchalam app icon

    Tchalam

    Richard Sam

    Interpret dreams and generate numbers

    Interprets dreams using a list of numerical meanings to generate lottery numbers. Provides historical lottery data and recent results. Allows users to track dream elements and their corresponding numbers for number games.

    ★ 4.610,621 ratingsUtilitiesFreeData updated 2026-09-17
  9. Calculator for iPhone and iPad app icon

    Calculator for iPhone and iPad

    Alex Yakauleu

    Calculate, tap, and track results

    A with basic arithmetic functions and a history bar for tracking previous inputs. Supports rotation and theme customization. Includes haptic feedback for 7 and later. Loads quickly and runs without fullscreen ads.

    ★ 4.717,789 ratingsUtilitiesFreeData updated 2026-09-15
  10. Calculator 2: The Game app icon

    Calculator 2: The Game

    Simple Machine, LLC

    Solve puzzles with a

    Solve puzzles by performing math operations on a . Navigate through levels to defeat the Clicky virus. Use a to convert numbers to letters and interact with portals. Track progress and complete challenges.

    ★ 4.79,049 ratingsGamesFreeData updated 2026-09-15
  11. U Scientific calculator app icon

    U Scientific calculator

    EONSOFT

    Edit equations, calculate functions, solve complex problems

    Perform complex mathematical calculations including trigonometric functions, logarithms, and exponentials. Switch between radians and gradients. Edit equations and save results for future reference.

    ★ 4.319 ratingsUtilitiesFreeData updated 2026-09-13
  12. 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
  13. Statistics Calculator-- app icon

    Statistics Calculator--

    Behzad Dogahe

    Calculate and probabilities

    Perform basic statistical calculations, create and edit data lists, and generate summary . Calculate regression models and probability distributions. Unlock advanced features and larger list capacities via in- purchase.

    ★ 4.4316 ratingsUtilitiesFreeData updated 2026-09-12
  14. Scientific Calculator Plus 991 app icon

    Scientific Calculator Plus 991

    Tran Duy

    Calculate, graph, convert, solve

    Allows users to perform complex calculations with a natural display that shows expressions as written. It supports fractions, roots, and exponents. The includes a graphing module for visualizing equations.

    ★ 4.712,406 ratingsEducationFreeData updated 2026-09-16
  15. Scientific Calculator Premium app icon

    Scientific Calculator Premium

    Nixus Development

    Calculate, graph, and store equations

    Perform complex calculations with root, power, trigonometric, and logarithmic functions. Calculate factorials and double factorials. Draw graphs, use four memory blocks, insert constants, and make notes.

    ★ 4.5286 ratingsUtilitiesFreeData updated 2026-09-08
  16. 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.