1 Button Voice Calculator 1BVC

No need to watch the screen, no need to select buttons.

Very simple use:

- For selecting the numbers:

Just touch the screen to select digits from 0 to 9.

Long touch to add a 0.

Shake the phone to record current number.

- For selecting operator:

Touch the screen to select operator.

Shake the phone to select current operator.

Long touch to record the result for further operations.

Shake repeatedly to reset values.