Matrix Calculator & Quiz

A matrix calculator that shows every step, paired with structured lessons and an interactive quiz - free, in a single app.

Matrix Learn takes you through matrices from the ground up: read the concept, work it out in the calculator, then test yourself with a quiz. Every calculation shows the full working, not just the final answer.

PLEASE READ FIRST

The app interface is currently in Indonesian only. Mathematical notation is universal and the calculator behaves identically in any language, but menus, lessons, and explanations are not yet translated into English. An English version is planned. Please factor this in before installing.

LESSONS

Six matrix topics in a guided order, each with Concept, Formula, Worked Example, and Summary:

• Basic Operations - addition, subtraction, scalar and matrix multiplication
• Determinant - 2x2 and 3x3 determinants
• Matrix Inverse - adjugate method and Gauss-Jordan elimination
• Transpose - turning rows into columns
• Matrix Rank - linearly independent rows via row reduction
• Systems of Linear Equations - Gaussian and Gauss-Jordan elimination

MATRIX CALCULATOR

Instant results with the complete working shown:

• Determinant (2x2, 3x3)
• Matrix inverse (2x2, 3x3)
• Transpose (2x2, 3x3, 2x3, 3x2, 4x4)
• Matrix rank
• Systems of linear equations

Each answer breaks the row operations down - for example "R2 = R2 - (3) x R1" - printing the intermediate matrix at every pivot. Useful for checking homework and for finding exactly where a calculation went wrong.

FOUR QUIZ LEVELS

Ten randomly generated questions per session, never the same twice:

• Beginner - basic operations and transpose
• Intermediate - adds determinants
• Advanced - adds inverses, with matrices up to 3x3
• University - determinants, inverses, rank, and linear systems

Questions come as multiple choice and numeric input. Your score combines accuracy, speed, and the difficulty level you picked. After each session you can review every question together with its full solution.

Stuck mid-quiz? Unlock a Hint to reveal the worked steps for that question. Up to three hints per session.

LEADERBOARD

Compare your best score with other players across three boards: All Time, Weekly, and Monthly.

WHY MATRIX LEARN

• No sign-up, no login - open it and start
• No email or phone number required
• Lessons, calculator, and quiz all work offline
• Completely free, with no in-app purchases
• Clean, lightweight interface built for focus

WHO IT IS FOR

High school students working through linear algebra, first-year university students, teachers who need quick worked examples, and anyone brushing up on matrix mathematics.

PLEASE NOTE

Rewarded video ads appear only when you choose to unlock a hint. An internet connection is required for the leaderboard and for saving scores.

Found a problem or a wrong answer? Contact the developer through the Play Store contact page.

Recent changes:
First release of Matrix Learn.

• Six matrix topics: basic operations, determinant, inverse, transpose, rank, and systems of linear equations
• Matrix calculator with complete step-by-step working
• Ten randomly generated quiz questions across four difficulty levels
• All-time, weekly, and monthly leaderboards
• No sign-up required — open it and start

Note: the app interface is currently in Indonesian only.