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.
Retro 15C screenshots
Ranked alternatives
Showing 281–300 of 1,000 ranked alternatives.


Plusly Calculator
Emmanuel Vizcarra
Calculate, edit, and share results
Perform calculations with advanced operators and scientific functions. Use trigonometric, logarithmic, and round functions. Calculate tips and discounts. Edit expressions on the fly with a magic cursor. Share results directly.

AZ Calculator: AI & More
Gerardo Arellano
Calculate, convert, and solve instantly
Perform calculations with a scientific calculator, convert units, and use health tools like BMI and body fat calculators. Access financial calculators for loan and investment estimates.

RLM-15CX
Ricardo Lira Matte
Calculate, program, and solve equations
The functions as a programmable scientific calculator with HP-15C features. Users can perform financial calculations including account balance tracking with interest rates and loan amortization schedules.

RPN-67 Pro
Willy Kunz
Programmable calculator for iOS
Run programs and perform calculations using a simulated HP-67 calculator. Input numbers and commands via on-screen keys. Access built-in functions and mathematical operations. Load and execute stored programs from magnetic card files.

Calculator Plus History Record
Chirag Gabani
Calculate and view past entries
Track and view past calculations in real time during use. Perform basic math operations with customizable settings. Save calculation for future reference and verification.

Physics Toolkit
Electronial
Calculate formulas and values
Perform calculations using built-in formulas and calculators for displacement, acceleration, Newton's second law, gravitational acceleration, Hooke's law, momentum, work, density, kinetic energy, potential energy, elastic energy, electric power,

ScientificLite
Hannes Sverrisson
Scientific functions easily accessible on screen.
The app offers scientific functions accessible by swiping between exponents, logs, and sinus functions. Users can correct entries with a backspace key, copy and paste numbers, and customize backgrounds and digits.

RV Pocket Reference
Calculated Industries, Inc.
Explore RV systems with diagrams
Access RV types, classes, and system diagrams for electrical, plumbing, and appliance setups. Includes calculators for weight, leveling, and towing calculations.

Slide Rule
正行 Akamatsu
A mechanical analog computer simulator.
The app simulates a mechanical analog computer used for scientific calculations. It performs multiplication, division, square, cube, square root, and cubic root functions.

RealCalculator: AI Solver
HigherGroundsTech LLC
Solve problems with step-by-step guidance
Solve math, biology, physics, chemistry, nursing, economics, and history problems with AI-powered step-by-step guidance. Type or snap a photo of equations or questions for instant answers.

Calculator Pro : All in 1 calc
Ankur Dhameliya
Calculate, solve, and analyze equations
Offers basic and scientific calculation tools. Perform addition, subtraction, multiplication, and division with the basic . Use trigonometric functions, logarithms, and exponents in the scientific mode. Save and recall previous calculations.

Math Central
Akash Pulinthanathu
Practice problems and track progress
Practice arithmetic operations, exponents, and equations with randomly generated problems. Solve mixed operations, work with scientific notation, and calculate roots. Track progress and review solutions for each problem.


Linear Regression Equation
Aberdeen Telecom Inc.
Calculate equations
Enter and validate data in a table with error detection. Calculate equations with and without predicted values. Predict y values within the range of x data.

SIMpull 600V Calculator
Southwire Company
Calculate wire pull characteristics and generate NEC®
The includes multiple calculators for electrical wire pull calculations. Users can input parameters for voltage drop, ground wire sizing, ampacity adjustments, and phase wire attributes. Results are generated according to NEC® standards.


Calx: Stack calculator
Daniel Clelland
RPN calculator with stack manipulation.
The app is an RPN calculator that uses a stack for number manipulation. It includes a tutorial, gestural interaction, multiple keypads with various functions, and customization options for fonts and colors.


Pocket Slide Rule Expert
Andrew Hall
Learn slide rule calculations with precision.
The app offers a classic slide rule experience with precision and educational features. Users can learn calculations through an auto-slide-rule mode and select from 19 basic operations, including multiplication, division, powers, and logarithms.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.