"This is great because it has a setting where I can block all unknown calls instead of having to take time to allow each contact on my phone. It then gives me a notice of blocked calls along with the unknown number. That saves me a lot of headaches with wrong numbers and telemarketers. The only issue is that it will silence a known number every so often."
"Master Call Blocker is really helpful if you want to block certain numbers from calling but in today's world almost every phone has this feature built in so it is kind of redundant. I still think it does a good job of blocking calls but my phone can do that without the need for a whole app to accomplish it."