Gravity Forms Locations (Free) vs. Integration (Paid)
The Gravity Forms add-ons are available to purchase at Store Locator Plus.
“Gravity Forms Locations” by De-Baat (free) is available from the WordPress Plugin Directory and works with Store Locator Plus. The paid version, Gravity Forms Integration is available as a paid add-on , available at the Store Locator Plus home page under Third Party Add-ons and provides extended capabilities.