I had a premium. Scam.The app is very pushy and annoying. I couldn't get into 80% of my incoming calls as it blocked the screen so the call doesn't appear on the screen. You only hear it and hopelessly looking for the call screen that you only get once the call is dropped. You have to call back then. Disturbing and annoying. I barely used this app as to maintain it takes a lot of time. I asked them to cancel they said they will not refund as more than 48h passed of yearly(!) subscription.