Compute functions derivatives directly on your Android device!
Very useful for math or physics exercices

✓ Compute first and second derivative
✓ Nice looking functions equations
✓ Lot of functions, like abs, sqrt, cbrt, ln, exp, log, and 24 trigonometrics functions (cos, sin, tan, sec, acos...)
✓ No Internet connection needed
✓ Syntaxic coloration (optional)