I put together a document that lists all the IOS apps and websites that I an others use to find campgrounds around the country. I've also included other apps that assist in weather/fuel/wind forecasts.
Some of these are not free, but you get what you pay for. What most folks don't realize, that the free apps steal your data by constantly fetching adds support the app. Not good if you don't have unlimited data.
Camping Resources
2021 FORD F350 dually 4x4 with 4.30 gears
2013 Eagle Cap 950
480 Watts Solar, 3K VictronConnect Multiplus II, VictronConnect smart DC-DC charger, VictronConnect 100/30 solar controller, 250 amps of lithium batteries by LifeBlue