Need a recommendation for Campsites app (Android)

[Afan]

Hi,
I plan to attend the Revzilla ADV Fest in Sturgis, 14th-17th of July. But I'll be on the road from Saturday to next Monday, 10 days. I plan to camp, as much as possible. Boondocking/free campsites if possible.
I looking for an apps (Android) to find a campgrounds. What do you use?
I saw in Google Play couple: Campedium, Free Campsites, iOverlander, FreeRoam... Anybody has any experience with any of these?

 

[itlives]

Kind of late but yes, I have good luck with
Freecampsites.net

 

[Lee_0123]

Hipcamp.com was recommended to me by my nephew who lives in his camper and uses the app all the time. I have used the app once and it worked fine for me.

 

[Doc True]

My go to app is Allstays. I've used Hipcamp a few times