Need to be able to sinc in the background.

I downloaded this app after being frustrated with the "sync with google" feature in Address Book. It works reasonably well, but I was surprised to find there was no feature to sync in the background or some kind of sync scheduler. I see this as an essential feature and the app will not be truly useful until it is available.

Silverplating about Contacts Sync: Sync for Google, v3.7.8