The best part is that it can be used by both personal as well professional use,it also has many more features like scheduling meetings with clients or sending reminders to them etc.,also there are other apps which have similar functionalities but nat-personal crm seems better than those because of its unique feature called "sync". It's very easy for new users who don't know how things work in this app so they tend to make mistakes while using these services. I am solving my problem related communication issues between me & team members via chatbots at workplace now i feel much comfortable when communicating through bots instead chatting over phone calls/emails/skype chatsetc..