The Dyrt is totally free to use for everyone, but having PRO will allow you access to extra features that the free version doesn't offer. So if you are a paid PRO user and opt not to renew, you will still have access to the free version, but the extra PRO features will vanish. 

Extra features offered with PRO:
Access to Trip Maps, Map overlays, offline access, campground discounts, downloadable maps and zero booking fees on campgrounds booked through The Dyrt!

So while you do not need PRO to use our site, it offers extra perks to make camping even better!