Matrix Calculator is a simple app which you can use to perform all basic matrix operations including:
null space computation
computation of the Characteristic Polynomial
MatCalc makes precise computations using fractions.
A perfect app for students that study Linear Algebra or Matrix Theory!
The app is very easy to use and it provides all details of the respective computations. You can input the elements of the matrix just by tapping on the respective cell and you can move to the next cell using the "next" key.