I got more spam calls after downloading this app, and Robokiller only blocks about a quarter of them, so this was a waste of money. It also blocks a bunch of callers that I actually need to talk to, like my doctor, and I hate that. Since I actually had in increase in spam calls since downloading this app, I wouldn't be surprised if this was one of those shady companies that sold off my number just so it would have more calls to block. Either way, terrible service, don't bother getting it.