Are your contacts still there in the Pinger textfree app, even if you delete it and reinstall it again?

for the Pinger textfree app (i got Unlimited i think) , i was wondering if your contacts that you had in there would still be there if you deleted the app, and reinstalled it again months later?Are your contacts still there in the Pinger textfree app, even if you delete it and reinstall it again?
They will still be there.