StackCAS - RPN Calculator

StackCAS is an offline calculator for Android that combines an RPN stack workflow with exact symbolic math.

It is designed for people who want a compact, keyboard-driven calculator for algebra, calculus, matrices, and complex numbers without giving up exact results.

Features:

- RPN stack-based workflow inspired by classic handheld calculators
- exact math with symbolic and numeric workflows
- exact symbolic algebra, simplification, and equation solving
- calculus tools including symbolic differentiation and integration
- matrix and vector calculations, including determinant, transpose, REF, eigenvectors, LU, and SVD
- complex-number calculations
- persistent stack, variables, and undo history
- offline operation with no account, no ads, and no analytics