Match's up RV park, discount GoodSam Club And Passport America with one another. As a avid Passport America member and full time RV'ER , I have found park's that are both GoodSam and Passport America parks are most of the time up better quality.
Key benefits of these app is "NO Internet" needed to uses, you can view the GoodSam detail and Passport detail without internet access.

This is in Beta right now so send all your ideas and stuff you want added to: [email protected]