Good website for CPI usa offers?

I am in the giveaway niche (legit giveaways) and i have a large pool of people who re enter to win the next item everyday so i am looking for a website similar to ogads that gets new usa app install offers everyday. I am looking for sites that get NEW usa offers, a large portion of my downloads come from the same people so i need a website that is always getting new usa app install offers because ogads just doesn't get enough new app install offers for the usa to host one new giveaway a day.

Anybody have any recommendations?