I have used this app for years. I have always paid for the premium version. At first, it was my favorite app, but it has gotten steadily worse. Now it is very glitchy. It closes randomly and typically takes up to three minutes to open which is very embarrassing when I'm trying to set an appointment with a customer. It also randomly unchecks completed tasks and reverts to older versions of my schedule. The developers are uncaring and blame my phone (Note 8). I'm looking for a new app.