Is ARK free on PC?

Hello there, I've been hearing a lot about ARK and its unique blockchain technology, and I'm really interested in giving it a try. However, I'm a bit confused about the pricing. So, I was wondering, is ARK free to download and use on PC? If not, what's the cost associated with it? And are there any limitations I should be aware of before diving in? I'd really appreciate any information you can provide, thank you!