Is the app step free?

Excuse me, could you clarify if the app you're referring to is indeed free of charge, or does it involve any kind of fee or subscription model? Many applications offer basic services for free but charge for premium features. So, I'm wondering if the app you're asking about is entirely step-free, meaning there are no hidden costs or limitations to its usage? It would be great if you could provide more context or specify the name of the app for a more accurate answer.