A nitro fuel mixing calculator that allows you to enter the desired fuel specifications and it will calculate the measurements of each ingredient and display the overall fuel density. Measurements can be done either by weight of volume. An accurate weighing scales may be used to measure out each ingredient.
There is also an "Adding" mode which allows you to modify off the shelf fuel and see what effect this will have on the overall density and other parameters. This is important to consider in model car racing where a Nitro max testing device is being used. You will also see how your changes effect the original nitro content of the fuel.
Values can be saved for the next time you start the app.