Is Apex completely free?

I understand that Apex offers a range of services in the cryptocurrency and finance space, but I'm curious about one specific aspect: is Apex completely free to use? I'm sure many people would be interested in a platform that doesn't charge any fees, especially in the often-fee-laden world of finance and trading. However, I'm also aware that most platforms offer some services for free and charge for others. So, I'm wondering if Apex has a similar model, or if there are any hidden costs that users should be aware of. Clarifying this would be extremely helpful for anyone considering Apex as their go-to platform.