This app has potential but, theres no instructions on how to use it. Or limited instructions. They say this is for the beginner, people who what more info about vaping but, the instructions are very limited. I bet there are many people out there who dont know the first thing about electricity, amperage or resistance. Maybe they shouldnt be building coils but, you know they will. Anyway, you just fill in the blanks and you have your resistance and how much wire to cut for your coil. That way you can see different options for wire type like kanthol a or a1 or many others, and wire size (awg) so you know what to use for a certain coil resistance and how much wire to cut. Im just not sure what to put in a couple of the fields. A little more description would be great. I would rate it at 5 if I knew what they wanted in a couple of the fields. Please explain.