It's free. And whatever you can use now will remain free. We will make sure to make this more obvious.
Our planned revenue is from a 'pro' tier that will have more storage space and potentially some advanced features and from selling short URLs (e.g. kraa.io/123).
Very hit or miss though. And withs some exceptions like Slow Horses, their productions feel overly produced, oiled by agency crossover and 360 package deals, i.e., manufactured from script to screen. Even Pluribus has that smug sanitized gloss.
Honestly, in these days when pretty much everything is sourced from individual production companies and showrunners, it becomes pretty clear that while some studios have their own brands/budgets/priorities/execs/etc. there's no magic formula to getting it all right. It's been tried before and will be tried again.
