Every Profession has some sort of Resource to manage, be it materials, money, physical or logical resources & with it some vital queries to be answered: At what Rate is my Resource getting consumed? How Long will current stock last? What will be near future requirement?
In Just Two Simple steps of Defining Your Resource & Actively Tracking its Consumption, you can be in total control of your Resource, using a Free & Open Source Software, that is available here: https://sourceforge.net/projects/trcfir/
Hope this is useful to all.