Not sure why I need a Facebook account – Call Control: #1 Call Blocker Review

So I read the reviews and actually came here because of it but after installing the app I was asked to either sign in with a Facebook or goggle account. I never had to do that with any other apps that I had or with the ones that blocks unwanted calls. This may sound good but I don’t think I need to get an account on Facebook or google to do this. Very disappointed. I have yet to find an app for iOS that works to simply prevent robot calls, spams, telemarketing and spoof calls without jumping over hoops to stop these calls. On top of that, the calls still are coming through and I have to block them myself. What is the point in having the app if you have to do the work in blocking it and adding it to the enormous list that should have been there to block the calls in the first place.
Review by 90ty on Call Control: #1 Call Blocker.