UpDownCounter

The very easy to use counter for both counting
up and counting down.

A big, easy to find, touch button
accompanied by a click sound, makes it possible
to use without need to focus at the screen.

Tap the button and count upwards.

A tap at zero button resets to zero.
Correction button for up or down depending of mode.

Insert a number, execute, and the counter
counts backwards to zero where a ping is heard.

Button for +10 intended for approximate counting of a large amount.

Last state is saved until next session.