I've been using the app for about two days and I have yet to open it and have it not "stop responding." It is NOT my internet connection or my phone. I cannot communicate effectively with my team if I can't use the app easily. The app part is a big waste of my time and its inability to reliably operate is a huge disappointment and disadvantage to people who are seeking treatment. So far everything except the Cerebral app has been great. I'm going to see if I have better luck using the website.