Matrix Wise Matrix Calculator 4+

Easily perform and explore matrix operations on your iPhone or iPad. Work with 1, 2, or 3 matrices, each with custom dimensions up to 4×8, using an intuitive UI designed for clarity and speed.

Select the number of matrices, choose an operation from the picker, and input values using a built-in keyboard that supports numbers, letters, symbols, and functions. You can also enter full expressions like `1 + 1/2`, `pow(2, 3)`, or `sqrt(2)` directly into any matrix cell.

Need to fill a matrix quickly? Use dedicated buttons to initialize with zeroes, ones, random values, sequences, or the identity matrix. Perform essential tasks like transpose, determinant, and inverse with just a tap.

Whether you're a student, educator, or engineer, this app provides a powerful and flexible matrix interface right at your fingertips.

Key Features:
• Select 1, 2, or 3 matrices, each up to 4×8 in size
• Customize row and column count for each matrix
• Choose operations:
◦ Addition (+)
◦ Subtraction (−)
◦ Hadamard product (*)
◦ Element-wise division (/)
◦ Matrix multiplication (@)
• Scalar and matrix operations (e.g. multiply a matrix with a scalar)
• Echelon form, row-echelon form, reduced row-echelon form transformation
• QR factoring (QR decomposition)
• LU decomposition with or without pivoting, Crout's algorithm without pivoting
• Tap to edit any matrix cell using a built-in keyboard
• Keyboard positioning: no keyboard, left, center, right
• Keyboard modes: numbers, letters, symbols, functions
• Supports math expressions like `1 + 2/3`, `sqrt(2)`, `pow(2, 3)`
• Matrix initialization buttons:
◦ AC – All zeroes
◦ ONE – All ones
◦ RND – Random values
◦ SEQ – Sequential values
◦ EYE – Identity matrix
◦ AAC – Set all matrices to zero
• Special keys:
◦ BS – Backspace
◦ CLR – Clear selected element
◦ PST – Paste the computed result into a matrix
• One-tap actions for:
◦ Transpose (T)
◦ Determinant (Det)
◦ Inverse (Inv)
• Expression parser supports basic math and functions:
◦ sqrt, pow, log, exp, sin, cos, tan, and more

Designed to make matrix math approachable and efficient, with support for both numeric input and expressions.

Note
For 3-matrix computation, the multiplication and division operators take precedence over addition and subtraction.
You can enter fractions as input (e.g., 1 + 1/2), but the output is always displayed in decimal form.