Is Kryll free?

I've been hearing a lot about Kryll and its advanced trading features, but before I dive in, I have a question that's been on my mind. Is Kryll a free platform, or do they charge for their services? I'm curious about the cost structure and whether there are any hidden fees I should be aware of. As a trader, I'm always looking for the best value for my money, so I'd appreciate any insight you can provide on the pricing model of Kryll.