Devalluator is a neat little app designed to make calculating percentages fast and simple.
It uses large buttons to input values and hot keys to let you select the percentage you want to apply to a figure.
Ideal for shopping environments when you just want to quickly find out the discount on that special pair of shoes and not wast time fiddling about with small buttons and complicated functions.
The app can perform 3 percentage functions:
% OFF to find out what the percentage off the figure you entered is.
% ON to add a percentage on to of a figure you entered (i.e. VAT).
% OF to find out what the selected percentage is of the original figure.