The app allows my clients to interact directly from their phones so that I am never without them! This has made life easier for both parties as we are always in contact via text or voice call instead of having phone calls every time they need me!! There really isn't anything negative about it at this point but if there were then what? It's been great though because now our sessions can be scheduled right off your calendar when you get home after work rather than needing an appointment first which makes things much smoother during busy times (especially summer).