This is a complete scam. – Caller Check Review

I didn't even need to download the app to know that this was a scam. First off, in the reviews they have all these 5 star reviews. However when you take a look at them you realize a pattern with almost all of them. This insures that they have put a bunch of false reviews. Second, they don't have any of the features they claim to have, and they require your Apple ID before you start your trial, which insures they may deduct from your account at any time. Third, this isn't possible, and you would be a fool to think that it is.
Review by 22cs on Caller Check.