Hi! I have came across a simple but powerful App that will provide information from over 1,800 nude friendly venues in 64 countries around the globe. You can search by name, country or geographically over the map. You can even get directions by its Google Maps integration.
Links to the homepages are provided which is quite convenient. Keep in mind that each place is different so it is wise to do further research in case that you are not familiar with the location of interest.
You can find more information in the link below. It is not a fee App but it comes at a reasonable price. I believe it is worth having.