4nt is free and stays free: no ads, no upsells, no account required. If it's earned a place on your machine, a one-time tip helps me keep building it. Either way, thanks for being here.
Hosting, the domain, engine tooling, optimization, and the hours that will go into building out this sim's full list of features and the features you ask for on the forum. That's the whole list. 4nt stays free for everyone, tip or not.