We've been using this app for 2 years and have never quite been able to get it to work right. Because of that, we've had to deal with some very unfortunate customer experiences. When bringing the problems up with customer service, they were extremely slow to respond (several days per email), and generally unhelpful. They are requiring us to finish our 1 year contract, even though the app has never really worked 100%. There seems to be a lot better (and cheaper) options out there now, so I encourage you to shop around!