This app lets you calculate the percentages retained, accumulated and those that passes each sieve.
You can choose one by one each sieve or you can choose one of the default configurations.
Now you can save the data, comes in handy when you have a two part granulometry, save as much granulometries as you desire and consult them anytime you want.
Create graphs the way you need them and as many as you will. You need internet connection to load graphs, data usage is minimum.