On your site you say that you offer MIT License which, to my understanding, means that the product is completely free.
However, under pricing plans, you offer different plans. One of those plans is free plan for 1 chart.
I am not sure these 2 facts make sense to me. Could you please explain the value of the zero dollar plan for 1 chart when there is an MIT license. Also, if you could please explain, why would anyone go for any plan if the product has MIT License?