BTW rekenmachine is a free Android app developed by SpringGreen. It falls under the category of Business & Productivity and the subcategory of Finance. This app is designed to help users quickly and efficiently calculate prices with or without VAT.

The app's primary function is to convert prices without VAT to prices with VAT and vice versa. It is a simple and straightforward application that is easy to use, making it ideal for individuals and businesses alike. With its user-friendly interface, users can quickly input values and get accurate results in seconds.

Overall, BTW rekenmachine is a useful app for anyone looking to make quick and accurate VAT calculations. It is a great tool for businesses and individuals alike who need to calculate prices with or without VAT on a regular basis.