Pretty good

It does what it says it should do but it could offer more. It could also include and ohm calculator that is easier to understand. Such as put in wire type, gauge, and enter what ohm you want and it spits out results. Include multiple coil calculation. Also include instructions on different types of coil wraps, pros/cons, and power/output/ohms of these wraps

Nreviewer about CoilCalculator by betterVapeTV.de