Before signing up for this Shift smart app and I hadn't had a single telemarketer call. But the day after signing up for this all of a sudden I have telemarketers calling me daily! In my opinion this is very disrespectful and deceitful of this app's developers because I didn't sign up for telemarketers to call me & now I'm tormented daily with sales calls that I don't care to recieve! Not very trustworthy at all. Beware of using this app!!!!