A free program for Android, by Gary Matula.
This is the app that every contractor, engineer, and geologist needs to know to do their job safely and successfully. It contains all the calculations, equations, and formulas that you will need in order to perform different types of calculations, such as the volume of a well, the flow rate of a pump, the pressure of a gas, and the temperature of a fluid.
It will help you perform all the calculations that you will need in order to perform the boring operation, such as the depth of the well, the volume of the well, the flow rate of the well, the pressure of the gas, and the temperature of the gas.