I like most about this tool it's free for open source projects with many templates, easy deployment in any cloud of your choice (AWS or GCP), easily integrate third party services and has good documentation as well. Some operations are not very intuitive, specially when you want to use MongoDB instead of Postgresql. For example if I try to create an api that will be using another database than postgresql then there isn't much option other than creating my own template. There aren't so many options but if I had problems it was always possible to ask them via slack chat. In general its great! It saved me time and hassle when working with web technologies. We used mongodb at backend where we store all our user data using firebase.